grass on

verb

To betray by informing on.

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Meanings

verbgrass on (third-person singular simple present grasses on, present participle grassing on, simple past and past participle grassed on)

present singular third person grasses on · participle present grassing on · participle past grassed on · past grassed on

  1. UKslangTo betray by informing on.

    What I was pissed off about, though, was him telling everyone that he'd only grassed on me because I'd grassed on him first, which was a total lie.

    2008, Danny King, School for Scumbags

Synonyms & antonyms

Also see
bewraydimedime outdrop a dimegrassname namesnarkpeachrat out
Cite this entry
APA

grass on. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/grass%20on

MLA

“grass on.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/grass%20on. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “grass on,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/grass%20on.

Source: grass on on Wiktionary, CC BY-SA 4.0.