from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Unpleasantly sharp, pungent, or bitter to the taste or smell. See Synonyms at bitter.
- adj. Caustic in language or tone.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Sharp and harsh, or bitter and not to the taste; pungent.
- adj. Causing heat and irritation; corrosive
- adj. Caustic; bitter; bitterly irritating
from the GNU version of the Collaborative International Dictionary of English
- adj. Sharp and harsh, or bitter and not, to the taste; pungent.
- adj. Causing heat and irritation; corrosive.
- adj. Caustic; bitter; bitterly irritating.
from The Century Dictionary and Cyclopedia
- Sharp or biting to the tongue or integuments; bitterly pungent; irritating: as, acrid salts.
- Figuratively, severe; virulent; violent; stinging: as, “acrid temper,” Cowper, Charity.
- n. An acrid poison: as, “a powerful acrid,” Pereira, Mat. Med.
- n. One of a class of morbific substances supposed by the humorists to exist in the humors.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. strong and sharp
- adj. harsh or corrosive in tone
From Latin ācer, sharp (probably modeled on acid); see ak- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin ācris, from ācer ("sharp"); probably assimilated in form to acid. Cf. eager. (Wiktionary)