diff --git a/adr/0001-ffm-over-jni.md b/adr/0001-ffm-over-jni.md
index b75af5e..b486688 100644
--- a/adr/0001-ffm-over-jni.md
+++ b/adr/0001-ffm-over-jni.md
@@ -32,8 +32,8 @@ Native symbols bind to `MethodHandle`s in `Bindings`; the library targets JDK
   `--enable-native-access`.
 
 ### Risks to manage
-- FFM is young; signatures/restrictions may evolve. Centralised in `Bindings`
-  and `NativeCall` so changes are localised.
+- FFM is young; signatures/restrictions may evolve. Centralized in `Bindings`
+  and `NativeCall` so changes are localized.
 
 ## Alternatives considered
 
diff --git a/adr/0002-zig-cc-native-build.md b/adr/0002-zig-cc-native-build.md
index 11e94ff..64f17c2 100644
--- a/adr/0002-zig-cc-native-build.md
+++ b/adr/0002-zig-cc-native-build.md
@@ -31,7 +31,7 @@ it is idempotent (skips if the library exists).
 - `zig cc` is a clang wrapper, not the zstd-blessed build path.
 
 ### Risks to manage
-- Zig is pre-1.0; `zig cc` flag behaviour can shift between versions. The Zig
+- Zig is pre-1.0; `zig cc` flag behavior can shift between versions. The Zig
   version is **pinned** (0.16.0) in CI; upgrades require a re-test.
 
 ## Alternatives considered
diff --git a/adr/0009-nativeobject-idempotent-close.md b/adr/0009-nativeobject-idempotent-close.md
index bfac3ed..4a6dc3f 100644
--- a/adr/0009-nativeobject-idempotent-close.md
+++ b/adr/0009-nativeobject-idempotent-close.md
@@ -8,7 +8,7 @@
 
 Native contexts and dictionaries (CCtx, DCtx, CDict, DDict) own off-heap memory
 that must be freed via their zstd `ZSTD_free*` calls. Java's GC does not free
-native memory; double-free is undefined behaviour. The lifecycle model must be
+native memory; double-free is undefined behavior. The lifecycle model must be
 deterministic and safe to call twice.
 
 ## Decision
diff --git a/adr/0012-benchmark-methodology.md b/adr/0012-benchmark-methodology.md
index 788cde5..74e3dad 100644
--- a/adr/0012-benchmark-methodology.md
+++ b/adr/0012-benchmark-methodology.md
@@ -18,14 +18,14 @@ Benchmarks live in the `benchmark/` module (JMH), comparing zstd-java
 
 Two payload families:
 
-- **Synthetic, semi-compressible** (`BenchData`, ~3x ratio) parameterised over
+- **Synthetic, semi-compressible** (`BenchData`, ~3x ratio) parameterized over
   *sizes* — exercises the bandwidth regime.
-- **The vendored golden corpus** (`GoldenCorpusBenchmark`) parameterised over
+- **The vendored golden corpus** (`GoldenCorpusBenchmark`) parameterized over
   *real files* — exercises per-call native-boundary overhead, where FFM-vs-JNI
   fixed costs show up.
 
 Published numbers in `docs/benchmarks.md` state the host, JDK, dependency
-versions, and the JMH run parameters. Quick low-iteration runs are labelled
+versions, and the JMH run parameters. Quick low-iteration runs are labeled
 **directional, not publication-grade**; publication numbers use higher fork and
 iteration counts.
 
diff --git a/docs/how-to.md b/docs/how-to.md
index 4a9e728..ccdee8a 100644
--- a/docs/how-to.md
+++ b/docs/how-to.md
@@ -5,7 +5,7 @@ Task-focused recipes. Each assumes you have the library on the classpath (see th
 
 ## Compress on a hot path
 
-Reuse a context to amortise native allocation across many calls:
+Reuse a context to amortize native allocation across many calls:
 
 ```java
 try (ZstdCompressContext cctx = new ZstdCompressContext().level(19);
@@ -39,7 +39,7 @@ try (ZstdCompressContext cctx = new ZstdCompressContext().level(19)) {
 }
 ```
 
-`ZstdDecompressContext.reset(...)` works the same way. Reuse alone amortises
+`ZstdDecompressContext.reset(...)` works the same way. Reuse alone amortizes
 allocation; reset lets a long-lived or pooled context return to a known state
 without churning native memory.
 
diff --git a/docs/supported.md b/docs/supported.md
index 14be6f1..6cd80ac 100644
--- a/docs/supported.md
+++ b/docs/supported.md
@@ -82,7 +82,7 @@ rather than the deprecated `ZSTD_getDecompressedSize`.
 1. ~~**Streaming**~~ — done: `ZstdOutputStream` / `ZstdInputStream` (`compressStream2`, `decompressStream`, bounded buffers, dictionary constructors, `pledgedSrcSize` via `withPledgedSize`). Remaining: `MemorySegment`-buffer driver.
 2. ~~**Advanced parameters**~~ — done: every `ZSTD_cParameter`/`ZSTD_dParameter` via `ZstdCompressParameter`/`ZstdDecompressParameter` (+ `bounds()`), on both contexts; `pledgedSrcSize`. `nbWorkers` is settable but inert until the native build enables multithreading.
 3. ~~**Frame inspection**~~ — done: `ZstdFrame` (`isFrame`, `header`, `compressedSize`, `decompressedBound`, `decompressedSize`, `dictId`, skippable, `getFrameProgression`); dict-id from raw/CDict/DDict.
-4. ~~**Better dictionaries**~~ — done: COVER / fast-COVER optimisers, `finalizeDictionary`, `getDictHeaderSize`.
+4. ~~**Better dictionaries**~~ — done: COVER / fast-COVER optimizers, `finalizeDictionary`, `getDictHeaderSize`.
 5. ~~**Typed errors**~~ — done: `ZstdException.code()` returns `ZstdErrorCode` (via `getErrorCode`).
 
 ## Full symbol table
diff --git a/integration-tests/src/test/java/io/github/dfa1/zstd/it/GoldenCorpusTest.java b/integration-tests/src/test/java/io/github/dfa1/zstd/it/GoldenCorpusTest.java
index e85a516..d8692c5 100644
--- a/integration-tests/src/test/java/io/github/dfa1/zstd/it/GoldenCorpusTest.java
+++ b/integration-tests/src/test/java/io/github/dfa1/zstd/it/GoldenCorpusTest.java
@@ -52,7 +52,7 @@ private static Path locateCorpus() {
         }
         throw new IllegalStateException(
                 "golden corpus not found: third_party/zstd/tests is missing — "
-                        + "initialise the zstd submodule (git submodule update --init --recursive)");
+                        + "initialize the zstd submodule (git submodule update --init --recursive)");
     }
 
     private static Stream<Arguments> filesIn(String subdir, String suffix) {
diff --git a/integration-tests/src/test/java/io/github/dfa1/zstd/it/ZstdInteropExtrasTest.java b/integration-tests/src/test/java/io/github/dfa1/zstd/it/ZstdInteropExtrasTest.java
index 3a9948f..529ee32 100644
--- a/integration-tests/src/test/java/io/github/dfa1/zstd/it/ZstdInteropExtrasTest.java
+++ b/integration-tests/src/test/java/io/github/dfa1/zstd/it/ZstdInteropExtrasTest.java
@@ -115,7 +115,7 @@ void javaRejectsCorruptedChecksum() {
     }
 
     /// Skippable frames carry application metadata the decoder must pass over. A
-    /// skippable frame written by this library must be recognised and skipped by
+    /// skippable frame written by this library must be recognized and skipped by
     /// the zstd-jni stream decoder, leaving the following real frame intact.
     @Nested
     class Skippable {
diff --git a/zstd/src/main/java/io/github/dfa1/zstd/Bindings.java b/zstd/src/main/java/io/github/dfa1/zstd/Bindings.java
index 29514fb..8bd41f8 100644
--- a/zstd/src/main/java/io/github/dfa1/zstd/Bindings.java
+++ b/zstd/src/main/java/io/github/dfa1/zstd/Bindings.java
@@ -13,7 +13,7 @@
 /// Signatures and semantics follow the
 /// [official manual](https://facebook.github.io/zstd/doc/api_manual_latest.html).
 ///
-/// `size_t` and `unsigned long long` are modelled as
+/// `size_t` and `unsigned long long` are modeled as
 /// [java.lang.foreign.ValueLayout#JAVA_LONG] (LP64); the public API guards
 /// against negative interpretations where zstd uses sentinel values.
 ///
diff --git a/zstd/src/main/java/io/github/dfa1/zstd/ZstdCompressContext.java b/zstd/src/main/java/io/github/dfa1/zstd/ZstdCompressContext.java
index 00bd34f..6bafc87 100644
--- a/zstd/src/main/java/io/github/dfa1/zstd/ZstdCompressContext.java
+++ b/zstd/src/main/java/io/github/dfa1/zstd/ZstdCompressContext.java
@@ -6,7 +6,7 @@
 
 /// A reusable compression context.
 ///
-/// Reusing one context across many [#compress] calls amortises native
+/// Reusing one context across many [#compress] calls amortizes native
 /// state allocation, making it cheaper than the stateless [Zstd#compress]
 /// on hot paths. Not thread-safe: confine an instance to one thread or pool it.
 ///
diff --git a/zstd/src/main/java/io/github/dfa1/zstd/ZstdDecompressContext.java b/zstd/src/main/java/io/github/dfa1/zstd/ZstdDecompressContext.java
index 23934f6..767a65d 100644
--- a/zstd/src/main/java/io/github/dfa1/zstd/ZstdDecompressContext.java
+++ b/zstd/src/main/java/io/github/dfa1/zstd/ZstdDecompressContext.java
@@ -6,7 +6,7 @@
 
 /// A reusable decompression context.
 ///
-/// Reusing one context across many [#decompress] calls amortises native
+/// Reusing one context across many [#decompress] calls amortizes native
 /// state allocation. Not thread-safe: confine an instance to one thread or pool it.
 public final class ZstdDecompressContext extends NativeObject {
 
diff --git a/zstd/src/main/java/io/github/dfa1/zstd/ZstdDictionary.java b/zstd/src/main/java/io/github/dfa1/zstd/ZstdDictionary.java
index f237e8f..c621366 100644
--- a/zstd/src/main/java/io/github/dfa1/zstd/ZstdDictionary.java
+++ b/zstd/src/main/java/io/github/dfa1/zstd/ZstdDictionary.java
@@ -123,7 +123,7 @@ public static ZstdDictionary trainCover(List<byte[]> samples, int maxDictBytes)
         return trainCover(samples, maxDictBytes, 0);
     }
 
-    /// Trains a COVER dictionary optimised for a specific compression level.
+    /// Trains a COVER dictionary optimized for a specific compression level.
     ///
     /// @param samples          representative payloads to learn from
     /// @param maxDictBytes     upper bound on the produced dictionary size
@@ -135,7 +135,7 @@ public static ZstdDictionary trainCover(List<byte[]> samples, int maxDictBytes,
     }
 
     /// Trains a dictionary with the fast COVER algorithm, auto-tuning its
-    /// parameters. The recommended optimiser: nearly the quality of
+    /// parameters. The recommended optimizer: nearly the quality of
     /// [#trainCover] at a fraction of the time.
     ///
     /// @param samples      representative payloads to learn from
@@ -146,7 +146,7 @@ public static ZstdDictionary trainFastCover(List<byte[]> samples, int maxDictByt
         return trainFastCover(samples, maxDictBytes, 0);
     }
 
-    /// Trains a fast COVER dictionary optimised for a specific compression level.
+    /// Trains a fast COVER dictionary optimized for a specific compression level.
     ///
     /// @param samples          representative payloads to learn from
     /// @param maxDictBytes     upper bound on the produced dictionary size
@@ -184,19 +184,19 @@ private static ZstdDictionary optimize(List<byte[]> samples, int maxDictBytes,
     /// Turns raw dictionary `content` you supply (e.g. hand-picked common bytes,
     /// or a prefix from elsewhere) into a usable zstd dictionary by adding a
     /// header and entropy tables tuned on `samples`. Use this when you control the
-    /// dictionary content and only want zstd to finalise it.
+    /// dictionary content and only want zstd to finalize it.
     ///
     /// @param content          the raw dictionary content to wrap
     /// @param samples          representative payloads to tune entropy tables on
     /// @param maxDictBytes     upper bound on the produced dictionary size
     /// @param compressionLevel the level the dictionary will be used at (0 = default)
-    /// @return the finalised dictionary
-    /// @throws ZstdException if finalisation fails
+    /// @return the finalized dictionary
+    /// @throws ZstdException if finalization fails
     public static ZstdDictionary finalizeFrom(byte[] content, List<byte[]> samples,
                                               int maxDictBytes, int compressionLevel) {
         Objects.requireNonNull(content, "content");
         Objects.requireNonNull(samples, SAMPLES);
-        requireNonEmpty(samples, "finalise");
+        requireNonEmpty(samples, "finalize");
         try (Arena arena = Arena.ofConfined()) {
             FlatSamples in = flatten(arena, samples);
             MemorySegment contentSeg = Zstd.copyIn(arena, content);
@@ -211,7 +211,7 @@ public static ZstdDictionary finalizeFrom(byte[] content, List<byte[]> samples,
             } catch (Throwable t) {
                 throw NativeCall.rethrow(t);
             }
-            return toDictionary(dictBuf, produced, "dictionary finalisation");
+            return toDictionary(dictBuf, produced, "dictionary finalization");
         }
     }
 
@@ -283,7 +283,7 @@ public int headerSize() {
         }
     }
 
-    /// Serialises this dictionary to a fresh byte array.
+    /// Serializes this dictionary to a fresh byte array.
     ///
     /// @return a copy of the raw dictionary bytes, suitable for persisting
     public byte[] toByteArray() {
diff --git a/zstd/src/main/java/io/github/dfa1/zstd/ZstdEndDirective.java b/zstd/src/main/java/io/github/dfa1/zstd/ZstdEndDirective.java
index c3ad52d..8723c72 100644
--- a/zstd/src/main/java/io/github/dfa1/zstd/ZstdEndDirective.java
+++ b/zstd/src/main/java/io/github/dfa1/zstd/ZstdEndDirective.java
@@ -1,6 +1,6 @@
 package io.github.dfa1.zstd;
 
-/// Controls how much a [ZstdCompressStream#compress] call finalises, mirroring
+/// Controls how much a [ZstdCompressStream#compress] call finalizes, mirroring
 /// `ZSTD_EndDirective`.
 public enum ZstdEndDirective {
 
diff --git a/zstd/src/main/java/io/github/dfa1/zstd/ZstdErrorCode.java b/zstd/src/main/java/io/github/dfa1/zstd/ZstdErrorCode.java
index 37c8e10..11d8af7 100644
--- a/zstd/src/main/java/io/github/dfa1/zstd/ZstdErrorCode.java
+++ b/zstd/src/main/java/io/github/dfa1/zstd/ZstdErrorCode.java
@@ -9,7 +9,7 @@
 ///
 /// The numeric values mirror `ZSTD_ErrorCode` in the vendored zstd header. zstd
 /// does not guarantee these values across versions, but this library pins a
-/// specific zstd source, so they are stable for a given release. An unrecognised
+/// specific zstd source, so they are stable for a given release. An unrecognized
 /// code maps to [#UNKNOWN].
 public enum ZstdErrorCode {
 
@@ -19,7 +19,7 @@ public enum ZstdErrorCode {
     NO_ERROR(0),
     /// Unspecified error.
     GENERIC(1),
-    /// Input does not start with a recognised zstd frame prefix.
+    /// Input does not start with a recognized zstd frame prefix.
     PREFIX_UNKNOWN(10),
     /// Frame requires an unsupported zstd version.
     VERSION_UNSUPPORTED(12),
@@ -57,7 +57,7 @@ public enum ZstdErrorCode {
     STABILITY_CONDITION_NOT_RESPECTED(50),
     /// Operation called at the wrong stage of the context lifecycle.
     STAGE_WRONG(60),
-    /// Context was not initialised before use.
+    /// Context was not initialized before use.
     INIT_MISSING(62),
     /// A memory allocation failed.
     MEMORY_ALLOCATION(64),
@@ -116,7 +116,7 @@ public String description() {
     /// Maps a native `ZSTD_ErrorCode` integer to its category.
     ///
     /// @param value the native error code
-    /// @return the matching category, or [#UNKNOWN] if unrecognised
+    /// @return the matching category, or [#UNKNOWN] if unrecognized
     static ZstdErrorCode of(int value) {
         for (ZstdErrorCode code : values()) {
             if (code.value == value) {
diff --git a/zstd/src/test/java/io/github/dfa1/zstd/NativeLibraryTest.java b/zstd/src/test/java/io/github/dfa1/zstd/NativeLibraryTest.java
index e308be1..a8f5bd8 100644
--- a/zstd/src/test/java/io/github/dfa1/zstd/NativeLibraryTest.java
+++ b/zstd/src/test/java/io/github/dfa1/zstd/NativeLibraryTest.java
@@ -26,7 +26,7 @@ class Classifier {
             "Windows 11,      amd64,   windows-x86_64",
             "Windows 11,      aarch64, windows-aarch64",
             "Linux,           x86_64,  linux-x86_64",
-            // unknown os falls back to linux; arch aliases normalise
+            // unknown os falls back to linux; arch aliases normalize
             "FreeBSD,         aarch64, linux-aarch64",
             "Linux,           amd64,   linux-x86_64",
             "Linux,           arm64,   linux-aarch64",
diff --git a/zstd/src/test/java/io/github/dfa1/zstd/ZstdDictionaryTest.java b/zstd/src/test/java/io/github/dfa1/zstd/ZstdDictionaryTest.java
index 7e5d64d..b012178 100644
--- a/zstd/src/test/java/io/github/dfa1/zstd/ZstdDictionaryTest.java
+++ b/zstd/src/test/java/io/github/dfa1/zstd/ZstdDictionaryTest.java
@@ -127,7 +127,7 @@ void trainedDictionaryHasHeader() {
 
         @Test
         void finalizeFailsWithoutSamples() {
-            // When finalising raw content with no tuning samples
+            // When finalizing raw content with no tuning samples
             ThrowingCallable result = () -> ZstdDictionary.finalizeFrom(new byte[]{1, 2, 3}, List.of(), 4096, 0);
 
             // Then it fails fast with the empty-samples guard
@@ -320,11 +320,11 @@ void factoryDictionariesRoundTrip() {
     }
 
     @Nested
-    class Serialisation {
+    class Serialization {
 
         @Test
         void reloadedDictionaryKeepsIdentityAndDecodes() {
-            // Given the dictionary serialised and reloaded
+            // Given the dictionary serialized and reloaded
             ZstdDictionary reloaded = ZstdDictionary.of(sut.toByteArray());
 
             // Then it carries the same dictionary id
diff --git a/zstd/src/test/java/io/github/dfa1/zstd/ZstdFrameTest.java b/zstd/src/test/java/io/github/dfa1/zstd/ZstdFrameTest.java
index 62ad638..87a95fe 100644
--- a/zstd/src/test/java/io/github/dfa1/zstd/ZstdFrameTest.java
+++ b/zstd/src/test/java/io/github/dfa1/zstd/ZstdFrameTest.java
@@ -24,7 +24,7 @@ class ZstdFrameTest {
     class IsFrame {
 
         @Test
-        void recognisesAZstdFrame() {
+        void recognizesAZstdFrame() {
             assertThat(ZstdFrame.isZstdFrame(Zstd.compress(PAYLOAD))).isTrue();
         }
 
@@ -323,7 +323,7 @@ void roundTripsContentAndMagicVariant() {
             byte[] meta = "sidecar metadata".getBytes(StandardCharsets.UTF_8);
             byte[] frame = ZstdFrame.writeSkippableFrame(meta, 7);
 
-            // Then it is recognised as skippable and decodes back with its variant
+            // Then it is recognized as skippable and decodes back with its variant
             assertThat(ZstdFrame.isSkippableFrame(frame)).isTrue();
             assertThat(ZstdFrame.header(frame).frameType()).isEqualTo(ZstdFrameType.SKIPPABLE);
 
@@ -430,7 +430,7 @@ void mirrorTheByteArrayOverloadsForANativeFrame() {
         }
 
         @Test
-        void recognisesASkippableNativeFrame() {
+        void recognizesASkippableNativeFrame() {
             // Given a skippable frame in a native segment
             byte[] frame = ZstdFrame.writeSkippableFrame("meta".getBytes(StandardCharsets.UTF_8), 5);
             try (Arena arena = Arena.ofConfined()) {