Word Study
overreact
OXFORD DICTIONARY
overreact, v.intr. respond more forcibly etc. than is justified.
Derivative
overreaction n.
THESAURUS
overreact
aggrandize, amplify, ballyhoo, build up, burlesque, caricature, carry too far, draw the longbow, exaggerate, exhaust, go overboard, go to extremes, go too far, hyperbolize, idealize, know no bounds, lay it on, magnify, make much of, overact, overappraise, overassess, overcalculate, overcarry, overcharge, overcount, overdevelop, overdo, overdraw, overdrive, overelaborate, overemphasize, overesteem, overestimate, overexercise, overexert, overexpend, overindulge, overlabor, overmeasure, overplay, overpraise, overprize, overrate, overreach, overreact to, overreckon, oversell, overspeak, overspend, overstate, overstrain, overstress, overstudy, overtask, overtax, overtrain, overuse, overvalue, overwork, pass all bounds, pile it on, protest too much, puff, stretch, stretch the truth, talk big, talk in superlatives, tout, travestyFor further exploring for "overreact" in Webster Dictionary Online