The dictionaries are available online:
Le Grand Robert gives definitions, synonyms, antonyms, cross references to words with related meanings and etymology. Quotations from French authors, especially recent ones, are used to clarify usage and to trace changes of meaning.
Covers the vocabulary of the 17th century, although some late 16th century and early 18th century words are included. Concerned largely with the literary language of the period.
A dictionary of 16th century French which includes slang and words that have disappeared from the language. Definitions are supported by examples of use.
This is an etymological dictionary of contemporary (1965) French, concentrating on those words in common use. The various meanings and antecedents of the current word are given along with important dates including first use or modification.
Revised edition of the earlier basic printed version.
Revised edition of the earlier basic printed version.
The TLF gives the entire history of each word, its meanings, pronunciation, usage and syntax. Definitions are illustrated by identified quotations from works of various periods.
Electronic version of Dictionnaire de la langue française by Emile Littré (1872 ed.), including over 80,000 definitions and thousands of exemplary literary extracts.