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oo

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oo¹

Where it comes from

Representation of a long-o sound.

noun oos

  1. obsolete (Ω, ω) The Greek letter omega. Then came ther downe goodly ladyes tweyne […] And seyde, the gret Alpha & Oo most souereyne […] had hem thedyr sent.

oo²

  • /ˈəʊ.əʊ/ UK
  • /ˈoʊ.oʊ/ US

Where it comes from

From Hawaiian ʻōʻō, resembling its call.

noun oos

  1. Any of four Hawaiian birds of the genus Moho, formerly classed with the honeyeaters and now believed to be extinct. On this visit I made careful inquiries as to the success of Mr. Gay's efforts to raise the "Oo" bird on this island.

    Similar: moho, hoohoo

oo³

  • /uː/

Where it comes from

See ooh.

interjection

  1. alternative Alternative form of ooh

OO⁴

noun

  1. Alternative letter-case form of oo

adjective

  1. abbreviation, initialism Initialism of object-oriented

Oo⁵

proper noun

  1. A populated place in Sigi Regency, Central Sulawesi, Indonesia.

Thesaurus

Closest in meaning: phi, deen, ka, hoo, ze, wow, ooh, ah, aw, oh, gee, golly, gosh, phew, whoa, egad

Talk about this word

Cite this
MLA

"oo." Wiktionary, via Micwyn, micwyn.com/word/oo. Accessed 6 Nov. 2026.

APA

oo. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/oo

Chicago

"oo." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/oo.

BibTeX
@misc{oo_2026,
  title = {oo},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/oo},
  urldate = {2026-11-06}
}