To make fun of someone repeatedly or provoke them with mean words or actions meant to upset them.
From Old French 'tant' and 'tanter' meaning 'to try' or 'to test,' which evolved into the meaning of testing someone's patience with insults. Used in English since the 1500s.
Psychological research shows that responding calmly to taunts actually defuses them—bullies lose interest because they wanted an emotional reaction, so the best defense is truly to ignore them!
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