# simultaneous vs simultaneously

> English confusable word pair

## The two words

### simultaneous
*adjective · IPA /ˌsɪm.əlˈteɪ̯.ni.əs/ · frequency rank #14,414*
Happening at the same moment.

### simultaneously
*adverb · IPA /ˌsɪmlˈteɪnɪəsli/ · frequency rank #5,454*
Occurring at the same time.

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