French nouns inflect for number and gender - declination in the French language is to a large extent irregular.

In order to know the gender of a noun in the French language, language users must be able to recognize the alterable suffixes which signalize it. On other occasions, gender may be defined by the form of an article which happens every time given word retains its base in either case.

How to Define Gender of Nouns in French
Usually, gender will be marked by the suffix of any noun, or by the form of an accompanying article. In the French language, there is a number of nouns whose gender...