Comment by tokyoseb

Other good choices for French are the Trésor de la Langue Française informatisé (1994) developed by CNRS, and the various editions of the Dictionnaire de l’Académie Française.

They can be accessed here (along with a few more dictionaries) http://www.cnrtl.fr/definition/

There is also a decent iPhone/Android app to search the TLFi (not free, requires internet access) https://dictionnaire.app/