In an irritable manner.

The state or quality of being irritable; quick excitability

plural of irritant

plural of irritation

serving to excite or irritate / accompanied with, or produced by, increased action or irritation

Any substance causing irritation; an irritant.

One who or that which irritates.

plural of irritancy

The quality of being irritant or irritating. / (law, Scotland) The state or quality of being null and void; invalidity

plural of irritative