First Known Use: 1948
Dictionary
underwhelm
verb un·der·whelm \-ˈhwelm, -ˈwelm\
: to fail to impress (someone)
Full Definition of UNDERWHELM
transitive verb
: to fail to impress or stimulate <the movie underwhelmed most reviewers>
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Origin of UNDERWHELM
under + overwhelm
Rhymes with UNDERWHELM
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