Here are some synonyms for surly:
* Grumpy
* Crabby
* Ill-tempered
* Gloomy
* Sullen
* Cross
* Rude
* Unpleasant
* Hostile
For example:
* "The surly old man grumbled about the noise from the children."
* "He gave me a surly look when I asked for directions."
* "The bartender was surly and refused to serve us."