lapse, lapsed, lapsing, lapses, lapsable, lapser 1. A momentary fault or failure in behavior or morality.2. A break in the continuity of something.3. A passage of time.4. A failure to exercise a right within a specified period of time, e.g., the failure to buy a property before the termination of an option to buy.4. To become null and void through ... Found on http://www.wordinfo.info/words/index/info/view_unit/1148/