Word.ws English Dictionary

crum up

crum up verb: to delouse; to treat for lice. Also the misspelling of crumb up.

Verb

crum up (third-person singular simple present crums up, present participle crumming up, simple past and past participle crummed up)

  1. (slang) To delouse; to treat for lice.
  2. (slang, transitive) To ruin (something).

Also used as

crum up is also the misspelling of crumb up.

Forms of crum up

third-person singular presentcrums up
present participlecrumming up
past participlecrummed up
pastcrummed up

Questions about crum up

What does crum up mean?
Crum up means to delouse; to treat for lice.
What part of speech is crum up?
Crum up is a verb.
What is the past tense of crum up?
The past tense of crum up is crummed up.

Words near crum up in the dictionary

  1. crullers
  2. Crulls
  3. crum
  4. crum cake
  5. crum cakes
  6. crum up
  7. crumb
  8. crumb cake
  9. crumb cakes
  10. crumb cruncher
  11. crumb crunchers

Source and license

Adapted from Wiktionary: crum up (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “crum up.” Word.ws, https://word.ws/crum_up. Based on Wiktionary, CC BY-SA 4.0.