Lapse/læps/ Definition 1 of 4Pro Tip 1/2Temporary Decline Use 'lapse' to describe a brief decline in quality or performance. The pianist’s lapse during the concert was hardly noticed. Pro Tip 2/2Short Inactivity 'Lapse' implies a brief pause in activity or attention, often leading to a mistake. A lapse in focus caused the athlete to miss the shot.