n. An insulting, offensive, or vulgar term used to replace a neutral term.
2006
I think our age suffers far more from its mealy mouthed euphemisms than it does its crude cacophemisms. The s-word or f-word strikes me as far less obscene than the minimizing, misleading intent of coinages such as collateral damage or weapons-of-mass-destruction-related-program-activities.
1992
Hey, can you use "cacophemism" in a sentence? I can, now that I know it's the opposite of euphemism. Let's see: Scorning the euphemism "high," Tom used the cacophemism "staggering drunk" to describe his pal's intoxication.
1992 (earliest)
Cacophemism. Using a harsh or cruel expression where a milder one would be proper; the opposite of euphemism.