irritability

In pathology, morbid responsiveness to stimuli.

The quality of being irritable; an irritable state or condition of the mind; proneness to mental irritation; irascibility; petulance.

In physiology, the property of nerve, muscle, or other active tissue of reacting upon stimuli; in muscles, specifically, the property of contracting when stimulated.

In botany, that endowment of a vegetable organism by virtue of which a motion takes place in it in response to an external stimulus.

The state or quality of being irritable; quick excitability; petulance; fretfulness.