Le Petit Robert (Online)
French dictionary that includes detailed definitions with examples, expressions, synonyms, antonyms, etymologies, literary citations, and more.
Grand dictionnaire terminologique (GDT)
Maintained by the Office québécois de la langue française, this dictionary provides terms used in specific fields of study and professions in French, English, and sometimes other languages.
Dictionnaire de l'Académie française
Important monolingual French dictionary which has been published by the Académie Française since 1694. Includes the most recent 9th edition.
French dictionary with definitions, expressions, citations, pronunciations, and more.
Le Nouveau petit Robert : dictionnaire alphabétique et analogique de la langue française
REF PC2625 .R552 2009 (folio)
Le Grand Robert & Collins
French to English/English to French dictionary
Pocket Oxford-Hachette French Dictionary: French-English
French to English dictionary (Oxford Reference platform)
Pocket Oxford-Hachette French Dictionary: English-French
English to French dictionary (Oxford Reference platform)
Frédéric Godefroy, Dictionnaire de l'ancienne langue française, et de tous ses dialectes du IXe siècle au XVe siècle
Dictionary of the old French language and all its dialects from the 9th to the 15th century (1881-1902)
REF PC2889 .G5 (10 Volumes)
Dictionnaires d'autrefois
French dictionaries of the 17th, 18th, 19th and 20th centuries from the Project for American and French Research on the Treasury of the French Language (ARTFL) at the University of Chicago.
Dictionnaire du Moyen Français (1330-1500)
Online dictionary of Middle French (1330-1500)
The following are select specialized and focused (e.g. geographically) dictionaries.
Dictionnaire des lettres françaises (print, 5 volumes) (1039-1971)
Dictionnaire des canadianismes (print) (1989)
Over 8000 words and expressions used in French-speaking Canada.
Nouveau dictionnaire des difficultés du français moderne (print) (1987)
Dictionnaire des littératures de langue française (print, 4 volumes) (1987)
Dictionnaire des oeuvres littéraires du Québec (print) (1978)
Dictionnaire du français acadien (print) (1999)
Dictionnaire du français classique (print) (1988)