The term 'Sound of Impatience' refers to the various noises people make when they are feeling impatient. The crossword solutions for this term are 'TOOT' (4 letters), 'Ahem' (4 letters), 'SIGH' (4 letters), 'Tsk' (3 letters) and 'TUT' (3 letters). TOOT is a short, sharp sound made with the lips or tongue, often to express impatience or annoyance. Ahem is a noise made to attract attention, usually to express impatience or disapproval. SIGH is an audible exhalation of breath, often expressing sadness, disappointment, or impatience. Tsk is a sound made with the tongue to express disapproval or impatience. TUT is a sound made with the tongue to express disapproval or impatience.