とぼける: to play dumb, to feign ignorance, to play innocent, to have a blank facial expression; to play the fool; to be in one's dotage — Japanese vocabulary

とぼける means "to play dumb, to feign ignorance, to play innocent, to have a blank facial expression; to play the fool; to be in one's dotage". JLPT N1 word with pitch accent and an example sentence.