grass up
"grass-up" is a 7-letter English headword indexed on PlainSpell.
The verdict
“grass up” is uncommon English (outside the top frequency list), classed as a verb. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 8
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - To betray by informing on.
Corpus desk
Index EN-grass-up · grass up · English
grass up · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-LONG 8 letters
- VOW-2 2 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "G" thin
- PHOTO-UNK Peer pending
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
| Property | Value |
|---|---|
| Headword | grass up |
| Language | English |
| Part of speech | Verb |
| Letters | 8 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “grass up” in English
Rare enough to double-check
grass up is uncommon English outside the top frequency list, classed as averb. Rarity is why readers land here mid-draft. Gloss: "To betray by informing on.".
No generated misspelling entries exist for grass up in our index, since its letter pattern doesn't lend itself to common typo substitutions. No confusable counterpart is on file for this word, which typically means the spelling is too distinctive to be mistaken for another word.
Etymologically, the entry records: From grass (“informer”) + up. The correct English form is grass up, spelled G-R-A-S-S- -U-P.
Definition
- 1To betray by informing on.
Recorded use
Wiktionary exampleThese source excerpts show how grass up appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
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.
Etymology
From grass (“informer”) + up.
Synonyms
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.