Viking Bastard said:
And Legion of Superheroes has a bunch too. Probably the oldest ones.
Those are the ones I'd have to go with.
General:
Grife - damn, darn, grief, and in some cases 'god' in the general sense.
Sprock - the 'f' word in 21st Century Parlance.
Zootie - the hindquarters in vulgar parlance
Squaj - unisex insult similar to the B-word for male or female, or something a bit stronger.
Nass - Excrement or vulgar parlance for same.
Skrag - Knock it off, stop it
Linsnarian [Gear's homeworld]:
Foozle / Squeedle - a quick and dirty jury-rig of a biotechnological connection to a completely inorganic AI type interface.
30th Century Archaic:
Rad-Burn (You) - G-damn you. Literally "may you receive a painful radiation burn"
Grummy - Disgusting condition, slimy, unclean, nasty
Drek - see above, Nass