Reading through the forums of Trollcall.net I found these troll slang and swear words. If you are easily shocked or offended I suggest you do not read further.
vekk
One of the most versatile words in the Zandali language. Vekk actually means crooked, dishonourable, but it is used as an expletive for all occasions.
Example - In Uldaman, the over-confident orc warrior in your party charges forward into a room and is attacked by seven dwarves at the same time. In the battle that follows everyone in the party comes close to being killed.
"Vekk! What the vekk are you doin', mon? You almos' got us killed, you vekking piece of vask."
vask
A noun