cool dude

slang

1. noun A man who is endearingly calm, congenial, and accommodating to others. We always thought Thomas was a pretty cool dude—really down to earth, not pretentious or stuck up at all. Man, I'm sad Luke got traded—he seemed like a really cool dude. I appreciate a mayor who seems like a cool dude you could get a beer with.

2. noun A man who is especially sophisticated, fashionable, or knowledgeable of the latest trends. He came out looking like one cool dude, with his brand-new suit and stylish haircut. This salesman looks like a cool dude—he could probably help you with picking out a pocket square. My brother's a cool dude—maybe you could borrow some of his clothes for the gig.

3. noun A man who displays or gives off an alluring air of aloofness, nonchalance, and nonconformity. My uncle was such a cool dude. He always rode around on this sick motorcycle, and you just knew that he played by his own rules. Once you put a guitar in a man's hands, he automatically becomes a cool dude. Cool dudes don't appeal to me. I like guys who are willing to be vulnerable and show their emotions.

4. adjective Of or indicating such a person or character. Sometimes used to indicate a desperate or pathetic attempt at imitation. Dad, put the cool dude glasses away and just smile for the camera, please. You can tell he's really going for a cool dude look that he just cannot pull off. If you dress like you're 20 when you're 40, it definitely gives off "cool dude" vibes—and that's not a good thing.