"Frak" is an potent profanity in the language of the Twelve Colonies.
- The term can describe sexual relations.
- Example: "You know what? I don't care who or what he fraks. He saved my ass down there, all right?" (Flight of the Phoenix)
- The term, as a perjorative, can be used to curse someone you vilify or find disgusting.
- Example: "Talk to me, motherfrakker!" (Valley of Darkness)
- The term also is used as an adjective to modify a definite article to describe an action or object that is subjectively considered outrageous, extreme, or ill-advised.
- Example: "Does anybody else think that this plan is frakking nuts?" (Fragged)
"Frak" is derived from the Original Series expletive, "frack". "Frack" was used in character dialogue far less than its counterpart in the Re-imagined Series.