Corpulent is from Latin 'corpulentus' ('fleshy, fat'), from 'corpus' ('body') plus the suffix '-ulentus' ('full of'). The ancestry passes through Latin corpulentus and Latin corpus. In present use as an adjective, it means "physically bulky or fat; having a large, fleshy body", keeping the historical formation close to the word's ordinary semantic work. Related words include corpse, corporeal, corps, and corpus; derived forms include corpulence and corpulently. Its contrast set includes thin, slender, lean, and slim, which clarifies the semantic boundary of the modern word.