verb (used with object) Informal.
Origin of underwhelm
Examples from the Web for underwhelmed
Now let's take a quick survey of the blockbusters that have underwhelmed this summer at the box office.
Maria “Macarena” Paz, a Caracas engineer, is underwhelmed by this explanation.Who Will Maduro Blame for Venezuela’s Blackout This Time?|Daniel Lansberg-Rodríguez|June 28, 2014|DAILY BEAST
So far, pretty much every one of those promised improvements has underwhelmed, and the skeptics have been vindicated."Pioneer" Health Care Plans Circle the Wagons Against Pay-for-Performance|Megan McArdle|March 4, 2013|DAILY BEAST
Clearly the Academy was underwhelmed by the eligible songs this year.The Oscars: 21 Fixes for the Show So It’s Less Boring|Evan Shapiro|February 20, 2012|DAILY BEAST
Word Origin for underwhelm
1953 (implied in underwhelming), a facetious play on overwhelm. Related: Underwhelmed; underwhelmingly.