cock-up

noun

A mistake.

Meanings

nouncock-up (plural cock-ups)

plural cock-ups

  1. CommonwealthmildlyslangvulgarA mistake.

    And I'm sorry for all the cock-ups, my cabinet are absolute crap. We'll have to do better next year.

    2003, Richard Curtis, Love Actually, spoken by Prime Minister (Hugh Grant)
    2 more examples

    If the zodiac was already developed in 2000 BC, it must have been kept as a cult secret or in some non-Babylonian country; this would be a 1500-year conspiracy theory. More likely is the individual cockup theory, viz. the naivety of Eudoxus himself.

    1998, John H. Roger, “Origins of the ancient constellations: II. The Mediterranean traditions”, in Journal of the British Astronomy Association, volume 108, number 2, page 81, column 2

    In over a quarter of a century of writing this column, there has been no end of scandals, mishaps, errors and general cock-ups resulting from ministerial incompetence.

    2023 November 15, Christian Wolmar, “Ministers should carry the can for ticket office fiasco”, in RAIL, number 996, page 46

    Synonyms: screw-up, fuck-up, aberration, bloomer, blooper, blunder, boner, boo-boo

  2. IrelandUKobsoleteprinters' slangA superior letter; a lower-case letter placed above the baseline and made smaller than ordinary script; traditionally used in abbreviations.

    The first word of every section or chapter is generally put in small capitals, after a small neat cock-up letter.

    1824, John Johnson, Typographia, volume 2, page 33
  3. ScotlandobsoleteA roll or twist of hair worn at the nape of the neck; a bun.
    1 more example

    Cockernonie, a gathering up of the hair of women, after a fashion similar to that of the modern "chignon," and sometimes called a "cock-up." Mr. Kirkton, of Edinburgh, preaching against "cock-ups"—of which chignons were the representatives a quarter of a century ago—said: "I have been all this year preaching against the vanity of women, yet I see my own daughter in the kirk even now with as high a 'cock-up' as any one of you all."

    1888, Charles Mackay, A Dictionary of Lowland Scotch, page 30

Synonyms & antonyms

Similar

Origin

First definition is a deverbal from cock up. Third definition is a shortening of cockernonnie.

Full word history & related roots →
Cite this entry
APA

cock-up. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/cock-up

MLA

“cock-up.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/cock-up. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “cock-up,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/cock-up.

Source: cock-up on Wiktionary, CC BY-SA 4.0.