# once vs onto

> English confusable word pair

## The two words

### once
*adverb · IPA /wʌn(t)s/ · frequency rank #275*
One and only one time.

### onto
*preposition · IPA /ˈɒn.tuː/ · frequency rank #1,768*
Arriving upon or on top of (speaking of a physical or metaphorical movement).

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