Fierfek

Fierfek (pronounced FEAR-fek) was a Huttese slang word that meant "hex" or "curse," but was commonly accepted to mean "poison" by non-Huttese-speaking races, most commonly Trandoshans. During the Clone Wars, it was adopted by clone commandos as a curse word. Boba Fett and Han Solo would later use it during the Second Galactic Civil War.