Examples from the Web for uncool
Her response was a “very un-macho, uncool, and unexciting one,” according to Albertine.
Then I think also hipster culture and stuff like that has made it labeled as “uncool.”How 'The Mindy Project' Star Adam Pally Became Hollywood's Go-To 'Bro'|Kevin Fallon|August 6, 2014|DAILY BEAST
His silence was “uncool and unprofessional,” as Dr. Tanning put it.
For the last few decades, fantasy has been considered an “uncool” genre—perhaps the uncoolest of all.
The first is that not liking something because other people do like it is about as uncool as it gets.