Is geek-out formal or informal?

It is informal. Use it in conversation, not in formal writing.

What is the difference between geek-out and obsess over?

Geek out is usually positive and playful. Obsess over often sounds stronger or less healthy.

Can I say geek out over a person?

Usually no. It is most common for interests, topics, or things.

Is geek out common in everyday English?

Yes, especially in casual American English and online speech.

← Dictionary

geek-out

/ˈɡiːk aʊt/

IELTSAcademic

verb

To geek out means to become very excited about a topic you love and talk about it a lot. It is often used for hobbies, books, games, technology, or fandom.

He geeked out over the new camera.
We geek out about cricket stats.
She geeks out on old science fiction films.

Adinary Nuance

Geek-out is more excited and playful than simply "like" or "enjoy." It is often used when someone talks at length because they feel strongly about a hobby or interest. It is closer to "ramble about something you love" than to formal words like "specialize" or "study."

In other languages

Vietnamese: mê mẩn
Spanish: emocionarse
Chinese: 着迷
Japanese: 夢中になる
Korean: 열광하다

Etymology

Geek-out is a modern phrasal verb built from geek and out. It became common in American English in the late 20th century, especially in casual speech.

Common phrases

geek out overgeek out ontotally geek out

Synonyms

enthuse rave obsess

Related words

geek nerd fan fandom

Frequently asked questions

Is geek-out formal or informal?: It is informal. Use it in conversation, not in formal writing.
What is the difference between geek-out and obsess over?: Geek out is usually positive and playful. Obsess over often sounds stronger or less healthy.
Can I say geek out over a person?: Usually no. It is most common for interests, topics, or things.
Is geek out common in everyday English?: Yes, especially in casual American English and online speech.