A fast, offline dictionary in your pocket

One Dictionary gives you English definitions, pronunciations, and translations both to and from many languages — all working completely offline.

Why One Dictionary

Download the dictionary once and look up words anywhere — no connection required.

English definitions plus translations both ways — from English into a growing list of languages, and from those languages back into English.

Instant search as you type, with clean, readable entries.

See pronunciations and hear audio for English entries.