Definitions

1. adjective

lacking in style, elegance, or fashionableness; unattractive or unappealing

“The uncool outfit made her stand out in a bad way.”

2. noun

an unappealing or unattractive quality

“Her uncool demeanor put everyone off.”

3. verb

to make or cause to seem uncool

“The new haircut uncooled him in front of his friends.”