Third-person singular form of stuff, meaning to fill something tightly with material or to put something quickly into a space.
From Old French 'estoffe' meaning material or supplies. The word entered Middle English around the 14th century, originally referring to fabric or woven goods, then broadened to mean any material used to fill or pad things.
The word 'stuff' started as a fashion term for fabric in medieval times, but English speakers kept using it more broadly until it became our favorite catch-all word for 'things' and 'material.' It's one of the most flexible words in English because people were too lazy to be specific!
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