To playfully behave as though attracted to someone in a lighthearted, non-serious way.
From 16th-century French 'fleureter' meaning 'to whisper sweet nothings,' possibly from 'fleur' (flower), reflecting the delicate nature of the interaction. The '-ed' ending marks it as past tense.
Flirting has a deeply human evolutionary purpose—it's basically non-threatening practice communication that allows people to gauge interest safely before committing to real courtship.
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