'store-bought' originates from the combination of 'store' and 'bought', where 'store' refers to a place where goods are sold, and 'bought' is the past participle of 'buy', meaning to purchase.

'store-bought' evolved from the simple combination of 'store' and 'bought' to describe items purchased from a store rather than made at home.

Initially, it simply described items purchased from a store, and this meaning has remained consistent over time.