The word 'uneconomical' is a modern English formation built upon the established adjective 'economical'. The core morpheme 'econom' traces back to the Greek 'oikonomia', a compound of 'oikos' (house) and 'nomos' (management, law), which originally described the prudent management of a household. The suffix '-ical' was later attached to form the adjective meaning "pertaining to such management." Finally, the Germanic negative prefix 'un-' is prefixed to invert the meaning, creating a term that literally means "not characterized by good household management," which in modern usage broadly denotes inefficiency or wastefulness in any resource context.

Structure: un (not) + econom (economy) + ical (adjective suffix) - un: A prefix of Germanic (Old English) origin, meaning "not," used to form negatives. - econom: A morpheme derived from the Greek 'oikonomia' (household management), via Latin and French, representing the concept of economy or thrifty management. - ical: An adjective-forming suffix of Latin origin via French, meaning "pertaining to" or "characterized by."