group wrecker; circle crusher
Slang term for a person who disrupts a social circle, especially by causing romantic conflicts or jealousy among members. Often used in university club or online community contexts.
wasei-eigo (Japanese-coined English), from circle crusher
He became a group wrecker and everyone's relationships turned sour.
When a circle crusher shows up, even a fun gathering gets ruined.
Variant with interpunct; less common but seen in some contexts.
Wasei-eigo from English 'circle' and 'crusher'. The term is not used in English with this meaning.