The term 'terrific, in slang' can be expressed in four different ways: HELLUVA (7 letters), PHAT (4 letters), BOSS (4 letters), and ACES (4 letters). HELLUVA is an informal way of saying something is really great or terrific. PHAT is an acronym for Pretty Hot And Tempting, which is often used to describe something that is excellent or desirable. BOSS is a slang term for something that is really good or impressive. Finally, ACES is a slang term for something that is excellent or outstanding. All four of these terms are used to express the idea of something being terrific.