irritant
/ˈɪɹɪtənt/ adjective, noun
Forms irritants
- adjective Causing irritation or inflammation.
- adjective (law, Scotland) Rendering null and void; conditionally invalidating.
- noun Any medication designed to cause irritation
- noun A source of irritation.
Synonyms
Etymology
From French irritant, equivalent to irritate + -ant.
Webster’s 1913
- adjective Rendering null and void; conditionally invalidating.
- adjective Irritating; producing irritation or inflammation.
- noun That which irritates or excites.
- noun Any agent by which irritation is produced; as, a chemical irritant; a mechanical or electrical irritant.
Etymology [LL. irritants, -antis, p. pr. of irritare to make null, fr. L. irritus void; pref. ir- not + ratus established.]
Etymology [L. irritans, -antis, p. pr. of irritare: cf. F. irritant. See Irritate to excite.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “irritant”, CC BY-SA 4.0. Details