Irritable1. (a.) ill-tempered; impatient; easily inflamed or exasperated; as, an irritable temper.
2. (a.) Very susceptible of anger or passion
3. (a.) Endowed with irritability; susceptible of irritation; capable of being excited to action by the application of certain stimuli.
4. (a.) Susceptible of irritation; unduly sensitive to irritants or stimuli. See Irritation, n., 3.
Thesaurus Entries
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