# acid vs add

> English confusable word pair

## The two words

### acid
*adjective · IPA /ˈæsɪd/ · frequency rank #3,272*
Sour, sharp, or biting to the taste; tart; having the taste of vinegar.

### add
*verb · IPA /æd/ · frequency rank #840*
To join or unite (e.g. one thing to another, or as several particulars) so as to increase the number, augment the quantity, or enlarge the magnitude, or so as to form into one aggregate.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/vs/acid-vs-add