une célibataire (the word is the same for both masculine or feminine except that you put un instead of une)
Miss - Mademoiselle
"Celibataire" is a French word that translates to "single" or "unmarried" in English.
une célibataire d'un certain âge - une vieille fille (a derogatory term)
Mademoiselle is the French word for Miss. Used as a courtesy title before the surname or full name of a girl or an unmarried woman in a French-speaking area.
Traditionally, in French a young or unmarried lady is referred to as "mademoiselle". A woman or married lady is referred to as "Madame".
A spinster is a woman who has never married.
A spinster is an unmarried woman A bachelor is an unmarried man
A married woman (or someone you don't know) is addressed as 'madam'. An unmarried woman is 'mademoiselle'.
Call her 'Madame', or 'Mademoiselle' if she looks young and unmarried.
Mademoiselle is French for "miss", the formal address for an unmarried young woman.
The word maiden means "virgin" or "unmarried." It is from the Old English and was first recorded as used in the 1550s to describe an unmarried woman.
The correct spelling of the word is bachelorette (an unmarried woman).