# onus vs oss

> English confusable word pair

## The two words

### onus
*noun · IPA /ˈəʊnəs/ · frequency rank #29,402*
A legal obligation.

### oss
*verb · IPA /ɒs/ · frequency rank #29,773*
To set about, or intend be inclined to set about (doing something).

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