The word "stuff" is a noun that refers to a collection of materials, items, or substances, often in an unspecified or generalized way. It can also be used as a verb, meaning to fill something tightly or to pack it with materials. In everyday language, "stuff" can also refer to abstract concepts, such as "stuff to do" or "emotional stuff."
The word "stuff" originates from the Middle English word 'stuffe,' which itself comes from the Old French 'estoffe,' meaning 'equipment' or 'material.' It is derived from the Latin word 'stuppa,' referring to tow or flax.