of or relating to allergy: an allergic reaction to wool.
having an allergy.
Informal. having a strong dislike or aversion: He's allergic to most modern music.

Origin of allergic

First recorded in 1910–15; allerg(y) + -ic
Related formsun·al·ler·gic, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for allergic

susceptible, hypersensitive, affected, sensitive

Examples from the Web for allergic

Contemporary Examples of allergic

Historical Examples of allergic

  • We were allergic to women from their nylon hose to their face powder.


    Lyn Venable

  • They're allergic to the critters, the trees, the natives—to everything here.

    Sugar Plum

    Reginald Bretnor

  • Others have allergic reactions to certain foods; some allergic reactions appear to be subtle, affecting a person's moods.

  • He also was allergic to nearly everything and was always sneezing at the wrong time, just when we were supposed to be quiet.

  • Lindsay had seen too much of allergic reactions since reaching Earth not to know he was looking at another.

    The Ambassador

    Samuel Kimball Merwin

British Dictionary definitions for allergic



of, relating to, having, or caused by an allergy
(postpositive foll by to) informal having an aversion (to)he's allergic to work
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 allergic

1911, from allergy + -ic; cf. French allergique (1906). Figurative use, "antipathetic, repulsed" is from 1936.

Online Etymology Dictionary, © 2010 Douglas Harper

allergic in Medicine




Of, caused, or characterized by an allergy.
Having an allergy or exhibiting an allergic reaction to a substance.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.