# spontaneous vs spontaneously

> English confusable word pair

## The two words

### spontaneous
*adjective · IPA /spɒnˈteɪ.ni.əs/ · frequency rank #11,124*
Self-generated; happening without any apparent external cause.

### spontaneously
*adverb · IPA /spɒnˈteɪ.ni.əs.li/ · frequency rank #18,701*
In a spontaneous manner; naturally; voluntarily.

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