prude

Use prude to describe someone who is too concerned with being proper or modest. It is a derogatory label affixed most often to girls or women who are not forthcoming romantically––it's not very nice.

Prude was borrowed from French, short for prude femme "wise and good woman," from Old French prud "wise, good" plus femme "woman." Though the word prude took on a disapproving or negative meaning, Old French prud also meant "capable, brave," and is probably the source of English proud.

Definitions of prude
1

n a person excessively concerned about propriety and decorum

Synonyms:
puritan
Type of:
disagreeable person, unpleasant person
a person who is not pleasant or agreeable

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