a jarring sound
'Jarring' is an adjective used to describe something shocking or something which has an unpleasant effect on someone's nerves or feelings: "The modern art was jarring on the walls of such an old building." It can also be used to describe a physical shock or vibration: "He came to a jarring stop when he saw the danger ahead." Something jarring provokes an unsettling feeling or experience. This is a word used in social and professional situations. Similar words include 'jolt', 'jerk' and 'unsettling.'