Standard Lemma guide

octogenary

adj · noun · 3 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.

  • General-American: /ɑkˈtɑ.d͡ʒəˌnɛr.i/
  • Received-Pronunciation: /ɒkˈtɒd͡ʒ.ɪ.nə.ri/

1

adj

Meaning 1

Of or related to the number 80, particularly

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable, obsolete

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adj

Meaning 2

Of or related to the number 80, particularly

Synonym of octogenarian: lasting or aged 80 years; 80-year-old.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable, obsolete

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: octogenarian

Antonyms: none provided

3

noun

Meaning 3

Synonym of eightysomething: a person 80 to 89 years old.

Definition source: English Wiktionary via Wiktextract

Usage: obsolete

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: eightysomething

Antonyms: none provided

History

Etymology

From Latin octōgēnārius (“containing 80”) either directly or via French octogénaire, from Latin octōgēnus (“80 each”) + -ārius (“-ary”), from octōgintā (“eight tens, 80”). Cognate with octogenarian.