irritability

The state or quality of being irritable; quick excitability.

irritability of temper

Blue No. 1 and yellow No. 6 may also be toxic to some human cells. And as little as 1 milligram of yellow dye No. 5 may cause irritability, restlessness and sleep disturbances for sensitive children.

A natural susceptibility, characteristic of all living organisms, tissues, and cells, to the influence of certain stimuli, response being manifested in a variety of ways.

We find a renitency in ourselves to ascribe life and irritability to the cold and motionless fibres of plants.

There is growth only in plants; but there is irritability, or, a better word, instinctivity, in insects.

A condition of morbid excitability of an organ or part of the body; undue susceptibility to the influence of stimuli.