1,400 new words in our dictionary! — Parasocial, glow-up, promposal & more
1,400 new words in our dictionary! — More

countersign 1 of 2

noun

ˈkau̇n-tər-ˌsīn How to pronounce countersign (audio)
Definition of countersignnext
as in word
a word or phrase that must be spoken by a person in order to pass a guard the guard demanded the countersign

Synonyms & Similar Words

Relevance

countersign

2 of 2

verb

as in to endorse

Related Words

Example Sentences

Recent Examples of Synonyms for countersign
  1. word
  2. endorse
  3. password
  4. sign
  5. sign on
  6. register
  7. cosign
Noun
  • Apparently the trick is to react more to the tone and tempo of the voice, rather than necessarily the precise words.
    — Nick Miller, New York Times, 9 Sep. 2026
  • The same poll found belief that data centers raise electricity bills jumped from 43% in January to nearly 60% by July—six months before Apollo or Morgan Stanley published a word of this research.
    — Nick Lichtenberg, Fortune, 8 Sep. 2026
Definition of word
Verb
  • Manchin raised eyebrows by endorsing Collins against Democrat Troy Jackson, marking the second consecutive cycle Manchin has backed his former colleague.
    — Burgess Everett, semafor.com, 15 Sep. 2026
  • The union plans to spend several million dollars on anti-Raman ads, Noah reports, targeting her membership in the local chapter of the Democratic Socialists of America, which recently endorsed her candidacy.
    — Kevinisha Walker, Los Angeles Times, 14 Sep. 2026
Definition of endorse
Noun
  • The risk also concentrates in service desk workflows, password resets, device enrollment, MFA re-registration and privileged access requests.
    — Michael Engle, Forbes.com, 10 Sep. 2026
  • Believing that the third party was somehow part of the exercise, the model identified a password and then used it to breach the system.
    — Lauren Fichten, CBS News, 10 Sep. 2026
Definition of password
Verb
  • One aspect of Lamont’s energy policy that Fazio declined to second-guess was the decision to sign a deal with Millstone, which was opposed by some Republicans at the time.
    — John Moritz, Hartford Courant, 18 Sep. 2026
  • The Soviet Union took the islands from Japan in the final days of World War II and the ongoing dispute has prevented the countries from signing a peace treaty formally ending their hostilities.
    — ABC News, ABC News, 18 Sep. 2026
Definition of sign
Verb
  • The safety provisions in the agreement are meaningful, but the standards will only be effective if all AI companies, especially the tech giants, sign on, said Josh Golin, executive director of online safety nonprofit Fairplay.
    — ABC News, ABC News, 15 Sep. 2026
  • These are players Newcastle United attempted to sign on multiple occasions — or at the very least held a long-term interest in — but who never actually made the move to St James’ Park.
    — Chris Waugh, New York Times, 14 Sep. 2026
Definition of sign on
Verb
  • Thad Kousser, a political science professor at the University of California-San Diego, noted that because Regan wasn’t a household name, the allegations were unlikely to register with voters.
    — Ben Paviour, Sacbee.com, 15 Sep. 2026
  • California’s general election is almost here and what better day to make sure you’re registered to vote than Tuesday, National Voter Registration Day?
    — Karen Garcia, Los Angeles Times, 15 Sep. 2026
Definition of register
Verb
  • Recent Miu Miu runways and A-listers like Hailey Bieber and Chloë Sevigny have helped cosign the trend.
    — Alyssa Rotunno, InStyle, 10 Aug. 2026
  • Lucky Brand’s 410 model has gone on sale — all the more reason to cosign its deep indigo wash, contrast stitching, mid-rise waist, and subtle slouch.
    — Stacia Datskovska, Footwear News, 22 June 2026
Definition of cosign
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Browse Nearby Words

counters
countersign
countersigned
See all Nearby Words

Cite this Entry

“Countersign.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/countersign. Accessed 20 Sep. 2026.

Copy Citation
Last Updated: - Updated example sentences
Love words? Need even more definitions?

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

More from Merriam-Webster

Word of the Day

Listen to the pronunciation of volition

See Definitions and Examples »

Popular in Grammar & Usage

See More

Why do we use apostrophes to show possession?

Merriam-Webster’s Great Big List of Words You Love to Hate

The Exceptions of '-s' and '-es' Plurals

A Who’s Who Regarding ‘Who’s’ and ‘Whose’

'A' or 'an'? What about before 'h'? An Indefinite Article Guide
See More

Popular in Wordplay

See More

9 Words That Sound Like Insults But Aren't

Back to School Vocabulary

Words from the 'Odyssey'

14 Phobias You Probably Haven't Heard Of

The Words of the Week - Sept. 18
See More

Popular

See More

Why do we use apostrophes to show possession?

9 Words That Sound Like Insults But Aren't

Back to School Vocabulary
See More

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
The Missing Letter A daily crossword with a twist
crayons-in-a-circle
Guess the Color Quiz Questions that use the whole box of crayons.
See All