What does cuss mean?
"Cuss" means to use swear words, and it also serves as a noun meaning either a swear word itself or — more colorfully — an eccentric, stubborn, or exasperating person. It arose as an informal alteration of the older and more formal "curse," a change that took root in regional American English and remains especially associated with casual, rural, and Southern speech. Because "cuss" names the act of swearing in deliberately mild, folksy terms, people often reach for it precisely when they want to talk about bad language without sounding too coarse themselves: a character in a novel might "cuss under his breath," or a grandmother might scold a child for learning "cuss words." The noun applied to people, as in "that old cuss," carries a tone of gruff affection rather than real insult. Informal in register throughout, "cuss" offers writers and speakers a colloquial, distinctly American flavor that the more neutral "swear" does not.
To use swear words; to utter profanity.
"He cussed fluently at the broken-down tractor."
Almost always informal; often followed by prepositional phrases such as "at" or "under one's breath."
A swear word or act of swearing; also, informally, an eccentric or objectionable person.
"The movie was full of cusses, so we waited to watch it until the kids were asleep."
When applied to a person, usually written as "an old cuss" or "a mean old cuss" and carrying a tone of grudging affection.
Used when referring to multiple swear words or multiple such people.
"The script called for a string of cusses during the argument scene."
"Cuss" isn't sloppy spelling — it's what linguists call an alteration of "curse," born in regional American speech where the r got swapped for an s.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of cuss
"Cuss" originated as an informal alteration of "curse," emerging in regional English — particularly American dialects — by the early nineteenth century, with the change from "rs" to "ss" typical of folk phonetic reshaping. It belongs to a small family of altered forms of "curse," alongside words like "cursed" becoming "cussed" (which survives as the adjective meaning stubborn or ill-tempered). The word's closest relatives are therefore not foreign cognates but other English descendants of "curse" itself, such as "accursed" from the same root lineage.
Related word forms
How cuss is actually used
"Cuss" is distinctly informal and colloquial, most common in American English, especially in Southern and rural dialects. It is often used self-consciously or humorously as a milder way of talking about swearing itself — saying someone "cusses" can sound less harsh than saying they "swears" or "curses." The noun sense referring to a person ("an old cuss") is affectionately teasing rather than genuinely insulting.
Easily confused with cuss
"Curse" is the standard formal word for profane language or invoking harm, while "cuss" is its informal, dialectal alteration used mainly in casual American speech.