# acidulous

> English word · Adjective · IPA /əˈsɪdjʊləs/

## Definitions
1. Slightly sour; subacid; sourish.
2. Sharp; caustic.
3. Containing carbonic acid.

## Etymology
Learned borrowing from Latin acidulus (“sourish, acidulous”), diminutive of acidus (“sour, acid”). See acid.

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