1. geek out - Noun
2. geek out - Verb
(intransitive, slang) To enthuse about a specific topic; to be engrossed in an interest, especially in discussing it with others.
Sorry, I didn't mean to spend fifteen minutes discussing the definition of "decimate". I guess I geeked out for a bit.
(intransitive, slang) To do geeky things; to act geeky.
Hey guys, let's geek out tonight and have a code-a-thon!
(intransitive, slang) To be scared, freak out, panic; to hesitate in fear.
I geeked out there for a minute and broke the lockpick.
(transitive, slang) To scare or freak out (somebody).
geek-out (plural geek-outs)
(informal) Alternative form of geekout
geek-out
I just got an iPhone, which is cool, but I don't download movies, I don't watch Hulu, I don't have Netflix. I don't do any of that. But I do geek out to music. Miles Teller
I'm super excited about gaming always. That's the thing that I geek out over; those are the vlogs that I'm surfing if I'm not already playing a game at night. Felicia Day
Actors geek out over athletes. Everyone knows that. James Roday
The ultimate art form of fashion is couture. I completely geek out when it comes to couture. It shows fashion as it used to be. I don't know how many people can actually afford the clothes, but in a way, that's beside the point. Diane Kruger
I really hope that we'll have a sustainable future on this planet, I really do. So I probably geek out mostly about learning more about how potentially we can hopefully make that happen, hopefully we're not too far lost. Ellen Page