underachieve
Verb
Meaning
perform less well or with less success than expected
Source: WordNetSynonyms
underperform
lose
collapse
fail
drift
break down
choke
abort
flop
choked
choking
flounder
disappoint
flunk
backfire
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Antonyms
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Examples
John consistently underachieves, although he is very able
My stocks underperformed last year
Apart from making the world underachieve its full potential, it will create demographic problems.
Did Carolina punch far above their weight as the season wound down, or did they underachieve in a handful of winnable games?