Joshua Worth answered The most common usage of 'lapse' is a brief drop in quality. For example:'A lapse in security allowed us to sneak through''A lapse in concentration meant we missed the turning' It can also be used as a verb, meaning to expire, or run out. 'My membership of the tennis club will lapse in January'Or, it can be used to show something happening gradually, without full consciousness. 'Make sure you concentrate, don't lapse into daydreaming''Don't lapse back into bad habits'Hope this helps!
