Definition:(adjective) 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 towar(adjective) sufficient to produce a result; "a man to whom painting was but another and less ####### way of writing dramas or novels or history" (adjective satellite) exerting or capable of exerting strong physiological or chemical effects; "an ####### vaccine"
| ** Please Select the best Word that fits the definition in the left column |