lapse
/ˈlaps/
noun
a slight error typically due to forgetfulness or inattention
a temporary deviation or fall especially from a higher to a lower state
a becoming less : decline
a lapse in table manners
a lapse from grace
error mistake blunder slip lapse mean a departure from what is true, right, or proper. error suggests the existence of a standard or guide and a straying from the right course through failure to make effective use of this. mistake implies misconception or inadvertence and usually expresses less criticism than error.
verb
to fall from an attained and usually high level (as of morals or manners) to one much lower; also : to depart from an accepted pattern or standard
sink, slip
to go out of existence : cease
lapsed into unconsciousness
noun
the adiabatic rate of decrease of atmospheric temperature with increasing altitude