He might be irritating at times, but he was never boring.
The word stung, irritating him.
Many other substances, such as chrysarobin, mustard, pepper, &c., are also capable of irritating the skin, the effect produced varying from mere dilatation of the cutaneous vessels to destruction of tissue.
It was irritating most of the time, like now when he wanted to get a quick response out of one.
The smug expression on her face would have been more irritating if her words hadn't revealed the fact that she didn't know the seriousness of the situation.