9 letters · 14 points in Scrabble
verb show an exaggerated response to something
originEtymology tree Proto-Indo-European *úp Proto-Indo-European *-er Proto-Indo-European *upér Proto-Germanic *uber Old English ofer- Middle English over- English over- English react English overreact From over- + react.
Etymology from Wiktionary, CC BY-SA 3.0