In language, both dysphemism (from the Greek 'dys' δυς= non and 'pheme' φήμη = speech) and cacophemism (in Greek 'caco' κακό = bad) are rough opposites of euphemism, meaning the usage of an intentionally harsh word or expression instead of a polite one.
The latter is generally used more often in the sense of something deliberately offensive, while the former can be either offensive or merely humorously deprecating. Examples of dysphemism include dead tree edition for the paper version of an online magazine, or the American military personnel's use of shit on a shingle for their common breakfast of creamed chipped beef on toast.
Dysphemism is quite as common as euphemism in everyday usage. No sports team actually slaughters or annihilates another; few companies crush their competition; no one is dumb as a box of hair (nor, for that matter, a box of rocks or bricks, or a sack of hammers).
Many of the same subjects can be dysphemized as euphemized, such as sex and death—a well-thought-of dead person may be said to have passed away, a disrespected one to have kicked the bucket or to be worm food. Oddly, some humorous expressions can be both euphemistic and dysphemistic depending on context: for example spank the monkey might be used as either a softer alternative to "masturbate", or as a more deliberately provocative one depending on the audience. Likewise, pushing up daisies can be taken as either softer or harsher than "died".
