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adj.
marked by qualities giving the power to produce an intended effect; "written propaganda is less efficacious than the habits and prejudices...of the readers"-Aldous Huxley; "the medicine is efficacious in stopping a cough"
adj.
concise and full of meaning; "welcomed her pithy comments"; "the peculiarly sardonic and sententious style in which Don Luis composed his epigrams"- Hervey Allen
adj.
constructing or tending to construct or improve or promote development; "constructive criticism"; "a constructive attitude"; "a constructive philosophy"; "constructive permission"
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.
profit oriented; "a commercial book"; "preached a mercantile and militant patriotism"- John Buchan; "a mercenary enterprise"; "a moneymaking business"
adj.
worthy of high praise; "applaudable efforts to save the environment"; "a commendable sense of purpose"; "laudable motives of improving housing conditions"; "a significant and praiseworthy increase in computer intelligence"