Exasperating

He was a very kind man, but his verbosity was exasperating.

This is exasperating.

Tom is exasperating.

He said his friend could be exasperating at times because of his irresponsible nature, but that most people liked him.

As a result, while the train was being shunted at Bombay, the buffers became locked, producing a situation most intriguing for the onlookers, but exasperating for the exalted passengers and the unhappy railway authorities.