quadragenarian

From Latin quadrāgēnārius (“containing 40”) + -an, either directly or via French quadragénaire, from Latin quadrāgēnus (“40 each”) + -ārius (“-ary”), from quadrāgintā (“four tens, forty”). Cognate with quadragenary, quadragenarious, and quadragene.

• (General American) IPA^(key): /ˈˌkwɑdɹəd͡ʒɪˈnɛɹiən/
• (Received Pronunciation) IPA^(key): /ˌkwɒdɹəd͡ʒɪˈnɛəɹɪən/

• Audio (UK):

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quadragenarian (plural quadragenarians)

1. Synonym of fortysomething: a person between 40 and 49 years old.

• vicenarian (20–29)
• tricenarian (30–39)
• quinquagenarian (50–59)
• sexagenarian (60–69)
• septuagenarian (70–79)
• octogenarian (80–89)
• nonagenarian (90–99)
• centenarian (100–199)
• supercentenarian (110+)

quadragenarian (not comparable)

1. Of or related to fortysomethings.

   Coordinate terms: vicenarian, tricenarian, quinquagenarian, semicentenarian, hexagenerian, sexagenarian, septuagenarian, octogenarian, nonagenarian, centenarian, supercentenarian

• quadragenary, quadragenarious

• “quadragenarian, adj. and n.”, in OED Online ⁠, Oxford, Oxfordshire: Oxford University Press, 2022.