Standard Lemma guide

oppo

noun · 2 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.

  • UK: /ˈɒ.pəʊ/
  • US: /ˈɑ.poʊ/
  • Australia: Recorded audio is listed in the source snapshot.
  • rhymes with -ɒpəʊ
  • rhymes with -ɑpoʊ

1

noun

Meaning 1

A friend, associate or colleague.

Definition source: English Wiktionary via Wiktextract

Usage: UK, countable, slang

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

Research into one's opponent's family, friends, and past, which aims to uncover activities or interests which embarrass or discredit them.

Definition source: English Wiktionary via Wiktextract

Usage: US, informal, uncountable

Topics: government, politics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: oppo research, opposition research

Antonyms: none provided

History

Etymology

Clipping of opposite number.

Clipping of opposition, or of opposition research as a whole.