# experiment vs experimental

> English confusable word pair

## The two words

### experiment
*noun · IPA /ɪkˈspɛɹ.ɪ.mənt/ · frequency rank #3,751*
A test under controlled conditions made to either demonstrate a known truth, examine the validity of a hypothesis, or determine the efficacy or likelihood of something previously untried.

### experimental
*adjective · IPA /ɪkspɛɹəˈmɛntəl/ · frequency rank #4,447*
Pertaining to or founded on experiment.

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