disconcerting UK /ˌdɪskənˈsɜːtɪŋ/US /ˌdɪskənˈsɝtɪŋ/ adjective1 •Tending to cause discomfort, uneasiness or alarm.Even with a safety harness, losing one's grip that high up is disconcerting. formsdisconcertings · more disconcerting · most disconcerting