Nettle
/ˈnɛt.əl/ verb mediumTo nettle someone is to irritate them persistently, the way a prickly plant stings the skin.
Her constant interruptions during the meeting began to nettle even the most patient board members.
Memory Trick
A nettle is a stinging plant - brush against it and it irritates your skin, just as this verb means to irritate someone's temper.