underachieve

Verb

Meaning

perform less well or with less success than expected

Source: WordNet

underperform lose collapse fail drift break down choke abort flop choked choking flounder disappoint flunk backfire

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achieve advance conquer blossom make it achieve a goal

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perform do

John consistently underachieves, although he is very able Source: Internet

My stocks underperformed last year Source: Internet

Apart from making the world underachieve its full potential, it will create demographic problems. Source: Internet

Did Carolina punch far above their weight as the season wound down, or did they underachieve in a handful of winnable games? Source: Internet