Sounds of disbelief are expressions of shock, surprise, or disbelief. Common sounds of disbelief include gasps, has, and uhs. Gasp is a five-letter word that is an expression of shock or surprise, usually uttered with a sudden intake of breath. Has is a three-letter word that is an expression of surprise or disbelief, often accompanied by a questioning tone. Uhs is a three-letter word that is an expression of hesitation or uncertainty, usually uttered with a questioning tone.