American Heritage Dictionary 5
The Fifth Edition of The American Heritage® Dictionary of the English Language as a mobile app.
Companion Thesaurus
EN Companion Thesaurus
JA 英英類語辞書
At a glance
A thesaurus with over 145,000 headwords, each listing synonyms, antonyms, and broader terms.
| Category | English Dictionaries & Thesauri |
|---|---|
| Languages | English–English |
| Platforms | iPad/iPhone |
| Dictionary source | Oxford |
| Developer | Enfour, Inc. |
Companion Thesaurus (英英類語辞書) is a complete English thesaurus app with more than 145,000 headwords. Each entry lists synonyms and antonyms, along with many broader related terms (hypernyms), so you can explore words from several angles.
Search results update as you type, and partial and wildcard searches help with uncertain spellings, crosswords, and word games. A scrolling index gives an overview of nearby entries, and every entry is hyperlinked so you can keep exploring.
Companion Thesaurus is designed to work alongside Enfour’s other dictionary apps that run on the UniDict® engine. Tapping a headword can open a search in a compatible dictionary, and a Back button returns you to where you started. Bookmarks with notes, automatic history, and an AI-boosted anagram generator are built in, and the app works fully offline on iPhone, iPad, and Mac.
Key features
- 145,000+ headwords with synonyms, antonyms, and hypernyms
- Real-time, partial, and wildcard search
- Scrolling index overview and hyperlinked entries
- Round-trip links to UniDict® dictionaries
- 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 | Oxford |
| Version | 18.0 |
| Updated | 2026-10-12 |
| Rating | 4.9 / 5 (13) |
| Developer | Enfour, Inc. |
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