an air-cooled motor was more effective than a witch's broomstick for rapid long-distance transportation
effective teaching methods
effective steps toward peace
made an effective entrance
his complaint proved to be effectual in bringing action
an efficacious law
Mnemonics (Memory Aids) for efficacious
having a striking effect is the meaning... "eff" is common i.e., it causes an effect.. "cacious" sounds similar to "cautious".. why are you cautious.. because the effect is striking.. so the meaning is striking effect
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