nesnosan

1. (of pain, heat, noise) unbearable; unendurable
   Napolju je nesnosna vrućina, ne izlazim do večeri. — The heat outside is unbearable, I'm not going out until evening.
   Imao je nesnosan bol u leđima. — He had unbearable back pain.
2. (of a person) insufferable; impossible
   Kad je umoran, mali je stvarno nesnosan. — When he's tired, the little one is really impossible.