Simple past tense and past participle of underestimate.(verb)
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Use "underestimated" in a sentence
"Those words are Elizabeth Bishop's, and it strikes me now that Warner's work may remain underestimated for much same the reason that Bishop's was throughout much of her life."
"What I may have underestimated is the media's retarded thirst for just such a thing to happen."
"One reason the extent of this has been underestimated is their inherent instability, which makes them difficult to study in laboratory experiments."