Standard Lemma guide

semicentenarian

noun · 1 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

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  • General-American: /ˌsɛˌmaɪˌsɛnəˈnɛriən/
  • General-American: /ˌsɛˌmaɪˌsɛntəˈnɛriən/
  • Received-Pronunciation: /ˌsɛmɪsɛntəˈnɛːrɪən/

1

noun

Meaning 1

Synonym of fiftysomething: A person celebrating a semicentenary; a person between 50 and 59 years old.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: fiftysomething

Antonyms: none provided

History

Etymology

From semicentenary (“50 year, 50th anniversary”) + -ian (“person”), equivalent to semi- (“half”) + centenarian (“100-year-old”), q.v.