annoyingirritatinginfuriatingintolerableinsufferablevexatiousobnoxiousunacceptabledisagreeable
An adjective describing something SO ANNOYING that you have to combine all the words that mean annoying into one.
He's so annoyingirritatinginfuriatingintolerableinsufferablevexatiousobnoxiousunacceptabledisagreeable that I would rather die than listen to any more of his nonsense.