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2.
Antonym of overwhelmed.
I was underwhelmed with the new vacation spot.
by geogoldman June 01, 2009
 
1.
unimpressed, unmoved, disappointed by lack of cerebral prowess or performance, failure to meet expectations, failure to provide evidence to support arguments
His performance did not wow me at all, I was totally underwhelmed.
by go big or go home January 01, 2004