irritableness Definition

irritable
adj

1. Easily annoyed, angered or excited.

Thesaurus: cantankerous, impatient, petulant, captious, irascible, tense, peevish, choleric, edgy, crotchety, testy; Antonym: cheerful, complacent.
2. Extremely or excessively sensitive.
3. biol.
Denoting a living organism that is capable of responding to an external stimulus, such as light, heat or touch.

Derivative: irritability
noun

Derivative: irritably
adverb

Etymology: 17c: see irritate.