American Heritage Dictionary 5
The Fifth Edition of The American Heritage® Dictionary of the English Language as a mobile app.
Companion Synonyms
EN Companion Synonyms
JA 英英同義語辞書
At a glance
Grady Ward’s Moby Thesaurus II, with 30,260 root words and over 2.5 million synonyms and related terms.
| Category | English Dictionaries & Thesauri |
|---|---|
| Languages | English–English |
| Platforms | iPad/iPhone |
| Dictionary source | Longman, Oxford |
| Developer | Enfour, Inc. |
Companion Synonyms (英英同義語辞書) is based on the Moby Thesaurus II by Grady Ward, one of the largest synonym collections available. It covers 30,260 root words with more than 2.5 million synonyms and related terms, which makes it a rich source of alternatives when you are writing.
The app runs on Enfour’s UniDict® engine, which allows dictionary apps to link to one another. That means Companion Synonyms works directly with other UniDict titles such as American Heritage®, LDOCE, and Oxford dictionaries: tap a headword to look it up elsewhere, then return with a Back button.
Search results update as you type, wildcard searches help with uncertain spellings and puzzles, and a scrolling index gives an overview of the word list. Bookmarks with notes, automatic history, and an AI-boosted anagram generator are included, and the app works fully offline.
Key features
- Moby Thesaurus II: 30,260 root words
- Over 2.5 million synonyms and related terms
- Links with UniDict® dictionaries such as American Heritage®, LDOCE, and Oxford
- Real-time and wildcard search
- Bookmarks with notes, history, and anagram generator
- Works offline on iPhone, iPad, and Mac
| Category | English Dictionaries & Thesauri |
|---|---|
| Languages | English–English |
| Platforms | iPad/iPhone |
| Dictionary source | Longman, Oxford |
| Version | 18.0 |
| Updated | 2026-10-13 |
| Rating | 3.9 / 5 (10) |
| Developer | Enfour, Inc. |
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