acidulent

1 of 2

noun

acid·​u·​lent

less common spelling of acidulant

: a substance that makes something acid or slightly acid : an acidulating or acidifying agent
Vinegar is an acidulant.
… phosphoric acid … is added in beverages as an acidulant, which means it gives a sharp taste to soft drinks.Wendyl Nissen
archaic
: acidulous
He seems to have been of an acidulent, discontented disposition, morose and somewhat vindictive.Frederick Locker Lampson and Godfrey Locker Lampson

Word History

Etymology

Adjective

borrowed from French acidulant, present participle of aciduler "to make acidic" (spelling in English assimilated to the suffix -ulent), back-formation from acidulé "treated with acid," borrowed from New Latin acidulātus — more at acidulate

First Known Use

Adjective

1800, in the meaning defined above

Time Traveler
The first known use of acidulent was in 1800

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Cite this Entry

“Acidulent.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/acidulent. Accessed 2 Sep. 2026.

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