useful

1 capable of being put to use or account useful suggestions for limiting the amount of food we eat Synonyms actionable, applicable, applicative, applied, functional, practicable, serviceable, ultrapractical, usable (also useable), practical, workable, workingRelated Words down-to-earth, pragmatic (also pragmatical), utilitarian; banausic, mundane; accessible, available, obtainable, reachable; all-around (also all-round), handy; active, alive, busy, employed, functioning, operating, operativeNear Antonyms abstract, academic (also academical), armchair, theoretical (also theoretic); inaccessible, unattainable, unavailable, unobtainable, unreachable; unsuitableAntonyms impracticable, impractical, inapplicable, nonpractical, unusable, unworkable, useless

2 capable of or suitable for being used for a particular purpose I've found this tool really useful for making sure all my pictures are hung straight Synonyms available, employable, exploitable, fit, functional, operable, practicable, serviceable, usableRelated Words applicable, relevant; doable, feasible, viable, workable; reusableAntonyms impracticable, inoperable, nonfunctional, unavailable, unemployable, unusable

3 providing service or assistance hopefully, the consultant's financial advice will prove useful in planning for our retirement Synonyms conducive, facilitative, helpfulRelated Words advantageous, beneficial, efficacious, favorable, productive, profitable, salutary; accommodating, obligingNear Antonyms ineffective, ineffectual; adverse, disadvantageous, inconvenient, profitless, unfavorableAntonyms unhelpful, useless