the fuck phrase5 •(slang, vulgar) Used with an interrogative pronoun as an intensifier to express anger, frustration, incredulity, or other strong emotion.So the man didn't like publicity; so the fuck what? — 2010 •(slang, vulgar) Used after verbs forming a part of a phrasal verb as an intensifier to imply aggressive emphasis.Shut the fuck up!Get the fuck out! •(slang, vulgar) Used to emphasize an adjective; fucking.I'm feeling the fuck good today. •(slang, vulgar) Used to emphatically express that something isn't true.—Mom, I'm going out with my friends tonight. —The fuck you are! •(slang, vulgar) Used as a shortened form of the common interrogative phrases.The fuck did you come from?The fuck do you know all of this!?