quinquagenary

The story

1. Latin · derived fromquīnquāgēnus“50 each”
2. French · derived fromquinquagénaire
3. Latin · derived fromquīnquāgēnārius“containing 50”
4. English todayquinquagenary

From Latin quīnquāgēnārius (“containing 50”), either directly or via French quinquagénaire, from Latin quīnquāgēnus (“50 each”) + -ārius (“-ary”), from quīnquāgintā (“five tens, fifty”). Cognate with quinquagenarian and quingenary.

Words from the same roots