Do not let peace lull you into idleness, for it will dull your mind as much as battle dulls a poor blade.

Do not get excited-to do so dulls the mind.

Kurt, mind dulled, did not catch the implication.

She was still drowsy, her mind dulled by the hard sleep, and perhaps she had been dreaming about him.

He set about his business early next morning, the keen mind dulled and impeded with fatigue.

He had been good about other things, too, she thought, her mind dulled by the subjective hours at the wheel.

Her mind dulled whenever she attempted any routine task; she found herself in a stupor, wondering what it was she had started but now couldn't recall.

At first, his mind dulled with sleep and wine, Cranston dared blankly but the significance of the friar's discovery gradually dawned on him.

Even his mind had dulled somewhat.

A brilliant mind, sharp and clever, but now dulled by time and sickness.