n. a person who is 40 years old or whose age falls between 40 and 50; adj. 1 40 years of age; 2 between the ages of 40 and 50
His mother is a quadragenarian.
His mother is a quadragenarian.
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forty year old; person who is in his forties; between 40and 50
octogenarian
6 syllables
quad-ra-ge-nar-i-an
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