An old slang phrase with two distinct meanings: originally it meant to delouse someone or treat them for lice — a very practical activity in wartime and barracks slang.
An old slang phrase with two distinct meanings: originally it meant to delouse someone or treat them for lice — a very practical activity in wartime and barracks slang. It also evolved to mean ruining or messing something up badly, much like 'screw up' or 'balls up.' The second meaning is the more relatable one for modern audiences — when you crum up a plan, a presentation, or a relationship, you've thoroughly wrecked it through incompetence or bad luck.
He completely crummed up the whole presentation by forgetting to save his slides.
Add your own interpretation of "crum up".
Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
See all Regional & Other slang on Slangora.
Browse all slang words starting with C.
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(slang) To delouse; to treat for lice.
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(slang, transitive) To ruin (something).
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