# thrash

> English word · Verb · IPA /θɹæʃ/ · frequency rank #24,024

## Definitions
1. To beat mercilessly.
2. To defeat utterly.
3. To thresh.
4. To move about wildly or violently; to flail; to labour.
5. To extensively test a software system, giving a program various inputs and observing the behavior and outputs that result.
6. In computer architecture, to cause or undergo poor performance of a virtual memory (or paging) system.

## Etymology
From Middle English thrasshen, a dialectal variant of thresshen, threshen (whence the modern English thresh), from Old English þrescan, from Proto-Germanic *þreskaną, whence also Old High German dreskan, Old Norse þreskja.

## Easily confused with
- **trash** (https://plainspell.com/en/vs/thrash-vs-trash)
- **Torah** (https://plainspell.com/en/vs/thrash-vs-torah)
- **Trish** (https://plainspell.com/en/vs/thrash-vs-trish)
- **Trask** (https://plainspell.com/en/vs/thrash-vs-trask)
- **thrust** (https://plainspell.com/en/vs/thrash-vs-thrust)
- **trashy** (https://plainspell.com/en/vs/thrash-vs-trashy)
- **thrush** (https://plainspell.com/en/vs/thrash-vs-thrush)
- **thrasher** (https://plainspell.com/en/vs/thrash-vs-thrasher)
- **tash** (https://plainspell.com/en/vs/tash-vs-thrash)
- **thrall** (https://plainspell.com/en/vs/thrall-vs-thrash)
- **Thrace** (https://plainspell.com/en/vs/thrace-vs-thrash)

## Common misspellings (10)
`htrash`, `tharsh`, `thhrash`, `thrahs`, `thrashh`, `thrassh`, `thrrash`, `thrsah`, `trhash`, `tthrash`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/thrash