English
hyperreact
From hyper- + react.
Proto-Indo-European *úp
Proto-Indo-European *upér ‘over, above’
Proto-Hellenic *hupér
Ancient Greek ὑπέρ ‘over’
English hyper-
The story
Attested since the 20th century.
Today it means
verb Synonym of overreact.
Language periods are conventional ranges, not dates for this word.
Etymograph / hyperreact