This is the world's most comprehensive French dictionary. 

The app contains everything you need to learn French. It has thousands of entries and thousands of synonyms, and it also includes the conjugation of all French verbs. The app is ideal for beginners, but it is also suitable for advanced users. You can search for words and synonyms you need anytime, anywhere. You can search for a word by spelling it - only the first few letters are needed.

Other features include: more than 100,000 synonyms, quick search, thesaurus requires zero internet connection, navigable interface, a copy and paste option.