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underreact

American  
[uhn-der-ree-akt] / ˌʌn dər riˈækt /

verb (used without object)

  1. to react with less than the expected or appropriate emotion.

Other Word Forms

Etymology

Origin of underreact

First recorded in 1965–70; under- + react

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.