trying

Causing strain, hardship, or distress.

Of a kind to test severely or thoroughly; difficult; severe: as, a trying ordeal; trying circumstances; a color trying to one’s complexion.

Adapted to try, or put to severe trial; severe; afflictive.

Difficult to endure; arduous.

Irritating, stressful or bothersome.

Present participle of try.

extremely irritating to the nerves

hard to endure