Word.ws English Dictionary

grassed up

grassed up is the simple past and past participle 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 grassed up

What is grassed up the simple past and past participle of?
Grassed up is the simple past and past participle of grass up.

Words near grassed up in the dictionary

  1. grasse
  2. grasseater
  3. grasseaters
  4. grassed
  5. grassed on
  6. grassed up
  7. Grassel
  8. Grassels
  9. Grassendale
  10. grasseous
  11. grasser

Source and license

Adapted from Wiktionary: grassed 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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