functional
func-tion-al
adjective
Working correctly; able to perform its intended purpose effectively.
"Is the old computer still functional?"
adjective
Designed to be practical and useful, rather than decorative or attractive.
"The new kitchen is very functional."
Thesaurus
Synonyms: practical, utilitarian, useful, structural, running, operative, functioning, working, useable, operational, operable, serviceable
Antonyms: nonfunctional, organic