'economical' originates from the Greek word 'oikonomikos', where 'oikos' meant 'house' and 'nomos' meant 'law'.

'oikonomikos' transformed into the Latin word 'oeconomicus', and eventually became the modern English word 'economical' through Middle English.

Initially, it meant 'pertaining to household management', but over time it evolved into its current meaning of 'avoiding waste' or 'efficient use of resources'.