vitutus (englanniksi)

annoyance (s: jokin asia harmittaa suuresti)
irritation (s: jokin asia harmittaa suuresti)
state of being extremely annoyed (s: vulgar)
irritated (s: vulgar)
or pissed off (s: vulgar)
also describes being bugged by something. Further description in the article of the verb vituttaa (s: vulgar)