adj. constructing or tending to construct or improve or promote development; "constructive criticism"; "a constructive attitude"; "a constructive philosophy"; "constructive permission"

adj. producing or capable of producing an intended result or having a striking effect; "an air-cooled motor was more effective than a witch's broomstick for rapid long-distance transportation"-LewisMumford; "effective teaching methods"; "effective steps toward peace"; "made an effective entrance"; "his complaint proved to be effectual in bringing action"; "an efficacious law"

adj. properly or sufficiently qualified or capable or efficient; "a competent typist"

adj. exerting or capable of exerting strong physiological or chemical effects"a potent toxin"; "potent liquor"

adj. concerned with actual use or practice; "he is a very practical person"; "the idea had no practical application"; "a practical knowledge of Japanese"; "woodworking is a practical art"

adj. producing or capable of producing (especially abundantly); "productive farmland"; "his productive years"; "a productive collaboration"

adj. being effective without wasting time or effort or expense; "an efficient production manager"; "efficient engines save gas"

adj. having inner resources; adroit or imaginative; "someone who is resourceful is capable of dealing with difficult situations"; "an able and resourceful politician"; "the most resourceful cook in town"

adj. being of use or service; "the girl felt motherly and useful"; "a useful job"; "a useful member of society"

adj. profit oriented; "a commercial book"; "preached a mercantile and militant patriotism"- John Buchan; "a mercenary enterprise"; "a moneymaking business"

adj. producing a sizeable profit; "a remunerative business"

adj. sufficiently valuable to justify the investment of time or interest; "a worthwhile book"

adj. having worth or merit or value; "a valuable friend"; "a good and worthful man"

adj. being of use or service; "the girl felt motherly and useful"; "a useful job"; "a useful member of society"

adj. giving an advantage; "a contract advantageous to our country"; "socially advantageous to entertain often"

adj. characterized by or displaying affirmation or acceptance or certainty etc.; "a positive attitude"; "the reviews were all positive"; "a positive benefit"; "a positive demand"

adj. causing destruction or much damage; "a policy that is destructive to the economy"; "destructive criticism"

adj. wreaking or capable of wreaking complete destruction; "possessing annihilative power"; "a devastating hurricane"; "the guns opened a withering fire"

adj. (sometimes followed by `to') causing harm or injury; "damaging to career and reputation"; "the reporter's coverage resulted in prejudicial publicity for the defendant"