cock·​sure | \ ˈkäk-ˈshu̇r How to pronounce cocksure (audio) \

Definition of cocksure

1 : feeling perfect assurance sometimes on inadequate grounds
2 : marked by overconfidence or presumptuousness : cocky

Keep scrolling for more

Other Words from cocksure

cocksurely adverb
cocksureness noun

Choose the Right Synonym for cocksure

sure, certain, positive, cocksure mean having no doubt or uncertainty. sure usually stresses the subjective or intuitive feeling of assurance. felt sure that I had forgotten something certain may apply to a basing of a conclusion or conviction on definite grounds or indubitable evidence. police are certain about the cause of the fire positive intensifies sureness or certainty and may imply opinionated conviction or forceful expression of it. I'm positive that's the person I saw cocksure implies presumptuous or careless positiveness. you're always so cocksure about everything

Examples of cocksure in a Sentence

you're always so cocksure about everything
Recent Examples on the Web On that occasion, he was beaten into second place by an elegant and cocksure runner named Wilson Kipsang, who broke the world record. Ed Caesar, The New Yorker, "Inside the Race to Break the Two-Hour Marathon," 11 Oct. 2019 Wright’s ebullient and cocksure Jay, who grabs our interest and sympathy from the start, also reveals emotional depths. Celia Wren, Washington Post, "Timely ‘The Royale’ comes out swinging," 10 Oct. 2019 Tom’s cocksure leather look — a breakout sultry aesthetic dating to the 1950s — captured the early attention of artists such as Robert Mapplethorpe, Raymond Pettibon and Mike Kelley. R. Daniel Foster, Los Angeles Times, "An L.A. home where homoerotic artist Tom of Finland lived is a shrine to his legacy," 2 Oct. 2019 The outside outrage isn’t getting any quieter, with the harshest of doubters lambasting Nagy’s play-calling, game management and a demeanor some perceive as cocksure. Dan Wiederer,, "Matt Nagy’s last-place Bears aren’t meeting expectations — and the fan base is enraged. How will he respond?," 31 Oct. 2019 The complete Dion Waiters, the cocksure Dion Waiters, the Dion Waiters who at the end of 2016-17 looked like the most prudent of future Miami Heat investments. Ira Winderman,, "Dion Waiters sizzles in reserve in victory, but makes clear starting remains priority," 10 Oct. 2019 After that, cocksure Cleveland quarterback Baker Mayfield will try his hand against the Patriots., "They rank No. 1 in total defense (238.4 yards per game), passing defense (160.4 yards per game), sacks (24), first downs allowed per game (13.2), yards allowed per play (4.07), third-down percentage (12.7 percent), and crushed spirits.," 9 Oct. 2019 By Tuesday, with my cocksure prediction sitting in subscribers’ mailboxes, the network exit polls had leaked. Walter Shapiro, The New Republic, "The Also-Rans Hoping for a New Hampshire Miracle," 9 Sep. 2019 Mulvaney began his tenure with an open display of cocksure philistinism, taking potshots at Warren at a conference of appreciative credit union executives. Michael Hiltzik, Los Angeles Times, "Column: Why is Trump’s consumer protection agency helping to promote H&R Block’s credit card?," 18 July 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cocksure.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of cocksure

1608, in the meaning defined at sense 1

History and Etymology for cocksure

probably from cock entry 1 + sure

Keep scrolling for more

Learn More about cocksure

Time Traveler for cocksure

Time Traveler

The first known use of cocksure was in 1608

See more words from the same year

Statistics for cocksure

Last Updated

1 Dec 2019

Cite this Entry

“Cocksure.” The Dictionary, Merriam-Webster Inc., Accessed 11 December 2019.

Keep scrolling for more

More Definitions for cocksure


How to pronounce cocksure (audio)

English Language Learners Definition of cocksure

: having or showing confidence in a way that is annoying to other people

More from Merriam-Webster on cocksure

Thesaurus: All synonyms and antonyms for cocksure

Rhyming Dictionary: Words that rhyme with cocksure

Comments on cocksure

What made you want to look up cocksure? Please tell us where you read or heard it (including the quote, if possible).


heavy with or as if with moisture

Get Word of the Day daily email!

Test Your Vocabulary

Semantic Drift Quiz

  • a twisty river
  • Which of the following was once a synonym for fun?
Spell It

Can you spell these 10 commonly misspelled words?


Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!