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clever; intelligent; bright; smart; wise; sensible; shrewd
well-behaved (esp. of children and pets); obedient; good
この猫はとても悧口で名前を覚えた。
This cat is very clever and learned its name.
悧口な返事をして先生を驚かせた。
I gave a clever answer and surprised the teacher.
悧口そうな顔をしているねと言われた。
I was told I have a smart-looking face.