Word.ws English Dictionary

grassing up

grassing up is the present participle and gerund of grass up.

Meaning of grass up

Verb

grass up (third-person singular simple present grasses up, present participle grassing up, simple past and past participle grassed up)

  1. (UK, slang) To betray by informing on.
    • My sister grassed me up to the caretaker! She thought she was doing me a favour — by grassing me up she was sure he'd let me off.1999, Angela Devlin, Bob Turney, Going Straight: After Crime and Punishment, →ISBN

Questions about grassing up

What is grassing up the present participle and gerund of?
Grassing up is the present participle and gerund of grass up.

Words near grassing up in the dictionary

  1. grassiest
  2. grassily
  3. grassiness
  4. grassing
  5. grassing on
  6. grassing up
  7. grassings
  8. Grassington
  9. grassland
  10. grasslander
  11. grasslanders

Source and license

Adapted from Wiktionary: grassing up (page history and authors); grass 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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