The gate crasher turned out to be a notorious party crasher.
uninvited guest
Frequency:
70
%
The gate crasher was quickly identified as an uninvited guest.
unwelcome intruder
Frequency:
60
%
The gate crasher was escorted out as an unwelcome intruder.
uninvited visitor
Frequency:
50
%
The gate crasher was treated like an uninvited visitor.
Idiomatic Expressions for gate crasher
Phrase: gate crasher mentality
Meaning: a mindset of intruding or disrupting an event or gathering without permission
Usage: She had a gate crasher mentality, always trying to sneak into exclusive parties.