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adj.
widely known and esteemed; "a famous actor"; "a celebrated musician"; "a famed scientist"; "an illustrious judge"; "a notable historian"; "a renowned painter"
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"