Irritant

Definition and stakes

Project Gutenberg,  The Gutenberg Webster's Unabridged Dictionary…

“ Ir"ri*tant (?) , a. [LL. irritants, -antis, p. pr. of irritare to make null, fr. L. irritus void; pref. ir- not + ratus established.] (Scots Law) Rendering null and void; conditionally invalidating.
The states elected Harry, Duke of Anjou, for their king, with this clause irritant; that, if he did violate any part of his oath, the people should owe him no allegiance.
Hayward.
Ir"ri*tant, a. [L. irritans, -antis, p. pr. of irritare: cf. F. irritant. See Irritate to excite.] Irritating; producing irritation or inflammation.
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Source: Gutenberg

Project Gutenberg,  The Gutenberg Webster's Unabridged Dictionary…

“ Tennyson.
3. (Physiol.) Endowed with irritability; susceptible of irritation; capable of being excited to action by the application of certain stimuli.
4. (Med.) Susceptible of irritation; unduly sensitive to irritants or stimuli. See Irritation, n., 3.
Syn. -- Excitable; irascible; touchy; fretful; peevish.
Ir"ri*ta*ble*ness, n. Irritability.
Ir"ri*ta*bly, adv. In an irritable manner.
Ir"ri*tan*cy (?) , n. [From 1st Irritant.] (Scots Law) The state or quality of being null and void; invalidity; forfeiture. Burrill.
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Source: Gutenberg

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