crash in
B1 informal inseparable intransitive
In simple words
To sleep at a friend's house without planning to, or to burst into a room suddenly.
Literal meaning: To crash means to collide; 'in' suggests entering a space — as if moving so fast you crash through the entry.
Meanings
1 A2
idiomatic
informal
To sleep at someone else's home informally, often at short notice and without a bed.
"I missed the last train, so I crashed in at Marcus's place for the night."
Grammar: inseparable
2 B1 neutral
To enter a place suddenly, noisily, or without permission.
"The police crashed in through the front door before anyone could react."
Grammar: inseparable
Usage notes
The 'sleep informally' sense is very common among young people. The 'enter forcefully' sense overlaps with 'crash into' or 'burst in'. Common in British and American English.
Commonly used with
sofa friend's place floor door bedroom apartment
Forms
Base
crash in
I/you/we/they
3rd person
crashes in
he/she/it
Past simple
crashed in
yesterday
Past participle
crashed in
have + pp
-ing form
crashing in
continuous
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Synonyms
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