'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'.

Initially, it meant 'pertaining to household management', but over time it evolved into its current meaning of 'efficient in resource use'.