useful

Main Entry:
effectual [ih-fek-choo-uhl]
Part of Speech: adjective
Definition: influential; authoritative
Synonyms: accomplishing, achieving, adequate, binding, capable, conclusive, decisive, determinative, effecting, effective, efficacious, efficient, forcible, fulfilling, in force, lawful, legal, licit, potent, powerful, practicable, productive, qualified, serviceable, sound, strong, successful, telling, useful, valid, virtuous, workable
Notes: effective means 'having a (desired) result or effect,' effectual is 'succeeding in producing a desired result or effect,' and efficacious means the same as effectual as well as 'serving as an effective solution or remedy'
Antonyms: impotent, incapable, ineffectual, unproductive, unsuccessful, useless, weak
Main Entry: efficient
Part of Speech: adjective
Definition: adept, effective
Synonyms: able, accomplished, active, adapted, adequate, apt, businesslike, capable, clever, competent, conducive, decisive, deft, dynamic, economic, economical, effectual, efficacious, energetic, equal to, experienced, expert, familiar with, fitted, good at, good for, handy, masterly, organized, potent, powerful, practiced, productive, proficient, profitable, qualified, ready, saving, shrewd, skilled, skillful, systematic, talented, tough, useful, valuable, virtuous, well-organized
Antonyms: helpless, impotent, incompetent, ineffective, inefficient, powerless, unable, weak
Main Entry: expedient
Part of Speech: adjective
Definition: worthwhile, appropriate
Synonyms: ad hoc, advantageous, advisable, beneficial, convenient, desirable, discreet, effective, feasible, fit, fitting, helpful, judicious, meet, opportune, politic, possible, practicable, practical, pragmatic, profitable, proper, prudent, seasonable, suitable, tactical, timely, useful, utilitarian, wise
Antonyms: inappropriate, inexpedient, unbeneficial, unprofitable, unworthwhile
Main Entry: favorable
Part of Speech: adjective
Definition: good, timely, advantageous
Synonyms: appropriate, auspicious, benefic, beneficial, benign, bright, cheering, convenient, encouraging, fair, fit, fortunate, full of promise, gratifying, happy, healthful, helpful, hopeful, kindly, lucky, nice, opportune, pleasant, pleasing, pleasurable, pleasureful, promising, propitious, prosperous, providential, reassuring, seasonable, suitable, toward, useful, welcome, well-timed, wholesome, worthy
Antonyms: bad, derogatory, detrimental, harmful, hindering, hurtful, hurting, injurious, unfavorable, unhelpful
Main Entry: fruitful
Part of Speech: adjective
Definition: productive
Synonyms: abounding, abundant, advantageous, beneficial, blooming, blossoming, breeding, childing, conducive, copious, effective, fecund, fertile, flourishing, flush, fructiferous, gainful, plenteous, plentiful, profitable, profuse, proliferant, prolific, propagating, reproducing, rewarding, rich, spawning, successful, useful, well-spent, worthwhile
Antonyms: barren, impotent, sterile, unfruitful, unproductive
Main Entry: functional
Part of Speech: adjective
Definition: working
Synonyms: handy, occupational, operative, practicable, practical, serviceable, useful, utile, utilitarian, utility
Antonyms: broken, idle, malfunctioning, unfunctional
Main Entry: gainful
Part of Speech: adjective
Definition: very productive, profitable
Synonyms: advantageous, beneficial, fat, fruitful, generous, going, going concern, good, in the black, lucrative, lush, moneymaking, paid off, paying, remunerative, rewarding, rich, satisfying, substantial, sweet*, useful, well-paying, worthwhile
Antonyms: disadvantageous, unproductive, unprofitable, useless
Main Entry: good
Part of Speech: adjective
Definition: competent, skilled
Synonyms: able, accomplished, adept, adroit, au fait, capable, clever, dexterous, efficient, expert, first-rate, proficient, proper, qualified, reliable, satisfactory, serviceable, skillful, suitable, suited, talented, thorough, trustworthy, useful
Notes: using good as an adverb in place of well ("she dances real good," "he did good") is nonstandard usage - so, it would be best to say "she dances very well," "he did well"
well is an adverb to describe an activity; good is an adjective to describe a condition or state
Antonyms: incompetent, unskilled, unsuitable
Main Entry: handy
Part of Speech: adjective
Definition: easy to use
Synonyms: adaptable, advantageous, available, beneficial, central, convenient, functional, gainful, helpful, manageable, neat, practicable, practical, profitable, ready, serviceable, useful, utile, wieldy
Antonyms: awkward, hard, inconvenient, unhandy, useless
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