chum in
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
To live with someone as chums; to bunk up or join up with someone as chums.
Register: dated, slang
Where it’s used:
Used
American English
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “chum in” mean?
To live with someone as chums; to bunk up or join up with someone as chums.
Is “chum in” formal or informal?
chum in is generally dated, slang.