Nouns

(n)oversight, lapsea mistake resulting from inattention
(n)lapsea break or intermission in the occurrence of something“a lapse of three weeks between letters”
(n)backsliding, lapse, lapsing, relapse, relapsing, reversion, revertinga failure to maintain a higher state

Verbs

(v)sink, pass, lapsepass into a specified state or condition; sink into“He sank into nirvana”
(v)lapseend, at least for a long time“The correspondence lapsed”
(v)lapse, backslidedrop to a lower level, as in one's morals or standards
(v)relapse, lapse, recidivate, regress, retrogress, fall backgo back to bad behavior“Those who recidivate are often minor criminals”
(v)lapselet slip“He lapsed his membership”
(v)elapse, lapse, pass, slip by, glide by, slip away, go by, slide by, go alongfor time to move forward“three years elapsed”