verb \ˈfa-tən\

: to make (someone or something) fat

: to become fat

fat·tenedfat·ten·ing \ˈfat-niŋ, ˈfa-tə-niŋ\

Full Definition of FATTEN

transitive verb
a :  to make fat, fleshy, or plump; especially :  to feed (as a stock animal) for slaughter
b :  to make more substantial
:  to make fertile
intransitive verb
:  to become fat
fat·ten·er \ˈfat-nər, ˈfa-tə-nər\ noun

First Known Use of FATTEN

circa 1552


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