crum up
In real, traceable use. Part of the curated seed collection; community review is coming.
Sense 1
Meaning · English
To delouse; to treat for lice.
Register: 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).
Sense 2
Meaning · English
To ruin (something).
Register: slang
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Sense 3
Meaning · English
Misspelling of crumb up.
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “crum up” mean?
To delouse; to treat for lice.
Is “crum up” formal or informal?
crum up is generally slang.