o

noun

ˈō How to pronounce o (audio)
Definition of onext
as in zero
the numerical symbol 0 or the absence of number or quantity represented by it our zip code is six-o-three-seven-five

Synonyms & Similar Words

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Example Sentences

Recent Examples of Synonyms for o
  1. zero
  2. nothing
  3. nil
  4. aught
Noun
  • Riemann himself proved that nontrivial zeros of the zeta function can only be found in a vertical strip between zero and 1.
    — Quanta Magazine, Quanta Magazine, 19 Oct. 2026
  • Engineers could represent the two configurations as binary digits, or zeros and ones.
    — Aamir Khollam, Interesting Engineering, 13 Oct. 2026
Definition of zero
Noun
  • Women continue marching down the runway in their stilettos and frothy little nothings.
    — Danielle Pergament, Allure, 19 Oct. 2026
  • While CinemaCon 2026 brought us exciting news about new films, it was also bogged down with status quo nothings about how Amazon MGM still hasn’t found a new James Bond.
    — Jason P. Frank, Vulture, 17 Apr. 2026
Definition of nothing
Noun
  • And in the current geopolitical climate, the prospects are next to nil.
    — Ian Johnstone, The Conversation, 9 Sep. 2026
  • Another stunner was Brentford’s 3-nil win over Tottenham Hotspur.
    — Greg Cote August 23, Miami Herald, 23 Aug. 2026
Definition of nil
Noun
  • The playlist on the way to the restaurant featured Norah Jones and Maroon 5, hitmakers from the aughts.
    — Ramishah Maruf, CNN Money, 1 Nov. 2026
  • Perusini started out in the music industry, earning a living licensing songs and making and selling mix CDs in the early aughts.
    — HubSpot, HubSpot, 30 Oct. 2026
Definition of aught
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.

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Cite this Entry

“O.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/o. Accessed 5 Nov. 2026.

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