Adjective useful has 4 senses
- useful, utile - being of use or service; "the girl felt motherly and useful"; "a useful job"; "a useful member of society"
Antonyms: useless, cast-off, discarded, junked, scrap, waste, futile, ineffectual, otiose, unavailing, inutile, unprofitable, unserviceable, unusable, unuseable
- useful, valuable, of value - of great importance or use or service; "useful information"; "valuable advice"
Antonym: unimportant (indirect, via important)
- useful - capable of being turned to use or account; "useful applications of calculus"
Antonym: impractical (indirect, via practical)
- utilitarian, useful - having a useful function; "utilitarian steel tables"
Antonym: nonfunctional (indirect, via functional)
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