Standard Lemma guide

oo

adj · intj · noun · 5 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • /uː/
  • UK: /ˈəʊ.əʊ/
  • US: /ˈoʊ.oʊ/

1

adj

Meaning 1

Initialism of object-oriented.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

intj

Meaning 2

Alternative form of ooh.

Definition source: English Wiktionary via Wiktextract

Usage: alt-of, alternative

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

(Ω, ω) The Greek letter omega.

Definition source: English Wiktionary via Wiktextract

Usage: obsolete

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

Any of four Hawaiian birds of the genus Moho, formerly classed with the honeyeaters and now believed to be extinct.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

Alternative letter-case form of oo.

Definition source: English Wiktionary via Wiktextract

Usage: alt-of

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

See ooh.

Representation of a long-o sound.

From Hawaiian ʻōʻō, resembling its call.

Across languages

Translations

2 source translations are retained for this English entry.

  • Hawaiian: ʻōʻō — Translations
  • Latin: moho — Translations