# semicentenarian

> English word · Noun · IPA /ˌsɛˌmaɪˌsɛnəˈnɛriən/

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

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

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/semicentenarian