[uh-sij-uh-luh s]


slightly sour.
sharp; caustic: his acidulous criticism of the book.
moderately acid or tart; subacid.

Also acidulent.

Origin of acidulous

From the Latin word acidulus, dating back to 1760–70. See acid, -ulous
Related formssub·a·cid·u·lous, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for acidulous

acerbic, dry, piquant, sharp, tart, acerb, biting, cutting, mocking, sarcastic, ironical

Examples from the Web for acidulous

Historical Examples of acidulous

British Dictionary definitions for acidulous




rather sour
sharp or sour in speech, manner, etc; acid

Word Origin for acidulous

C18: from Latin acidulus sourish, diminutive of acidus sour
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for acidulous

1769, "sub-acidic," used figuratively for "sour-tempered;" from Latin acidulus "slightly sour," a diminutive of acidus (see acid (adj.)).

Online Etymology Dictionary, © 2010 Douglas Harper

acidulous in Medicine




Slightly acid or sour.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.