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freak out

B1 informal separable both
In simple words

Get very scared, upset, or excited — or make someone else feel that way.

Meanings

1 B1 idiomatic informal

To become suddenly very frightened, anxious, or upset and behave in an uncontrolled way.

"She freaked out when she saw the spider on her pillow."

"Don't freak out, but I think we're lost."

— Common conversational phrase; widely found in American film and TV dialogue
Grammar: inseparable
2 B1 idiomatic informal

To cause someone else to become frightened, alarmed, or disturbed.

"The horror movie really freaked me out — I couldn't sleep afterwards."

Grammar: separable
3 B1 idiomatic informal

To become overwhelmed by extremely positive excitement or awe.

"The fans freaked out when the band walked on stage."

Grammar: inseparable
4 C1 idiomatic slang

(Historical) To experience or cause an intense psychological episode, originally associated with hallucinogenic drug use.

"The 1960s counterculture used 'freaking out' to describe psychedelic experiences."

"Freak Out!"

— Frank Zappa & The Mothers of Invention, album title (1966)
Grammar: inseparable
Usage notes

Very common in everyday informal speech. Can be intransitive ('She freaked out') or transitive ('That movie freaked me out'). Originally associated with drug culture in the 1960s but is now mainstream. The noun 'freak-out' is also widely used.

Commonly used with

completely totally movie news spider exam crowd

Forms

Base
freak out
I/you/we/they
3rd person
freaks out
he/she/it
Past simple
freaked out
yesterday
Past participle
freaked out
have + pp
-ing form
freaking out
continuous

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