'stain-resistant' originates from the combination of 'stain' and 'resistant', where 'stain' refers to a mark or discoloration and 'resistant' means having the ability to withstand or oppose something.

The term 'stain-resistant' evolved from the need to describe materials that could repel stains, particularly in textiles and surfaces.

Initially, it meant 'able to resist stains', and this meaning has remained consistent in modern usage.