functional - definition, thesaurus and related words from WordNet-Online

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Adjective functional has 6 senses

functional - designed for or capable of a particular function or use; "a style of writing in which every word is functional"; "functional architecture"
Antonyms: nonfunctional, cosmetic, decorative, ornamental, nonstructural
functional - involving or affecting function rather than physiology; "functional deafness"
Antonym: organic
functional - relating to or based on function especially as opposed to structure; "the problem now is not a constitutional one; it is a functional one"; "delegates elected on a functional rather than a geographical basis"
functional, usable, useable, in working order, operable, operational - fit or ready for use or service; "the toaster was still functional even after being dropped"; "the lawnmower is a bit rusty but still usable"; "an operational aircraft"; "the dishwasher is now in working order"
Antonym: unserviceable (indirect, via serviceable)
functional - designed for or adapted to a function or use; "functional education selects knowledge that is concrete and usable rather than abstract and theoretical"; "functional architecture"
Antonym: impractical (indirect, via practical)
running, operative, functional, working - (of e.g. a machine) performing or capable of performing; "in running (or working) order"; "a functional set of brakes"
Antonyms: malfunctioning, nonfunctional (indirect, via functioning)