恍惚 （コウコツ） ecstasy, rapture, trance, senility

恍惚状態 （コウコツジョウタイ） state of ecstasy, state of rapture, trance, reverie, senile dementia

惚ける （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