What is the antonym for lapse?

The antonym for "lapse" depends on the context in which it's used. Here are a few possibilities:

If "lapse" refers to a temporary failure or slip-up:

* Success

* Improvement

* Progress

* Advancement

* Maintenance

* Consistency

If "lapse" refers to a period of time passing:

* Continuation

* Persistence

* Endurance

If "lapse" refers to a loss of validity:

* Renewal

* Extension

* Reinstatement

Example:

* Lapse: The student's concentration lapsed during the lecture.

* Antonym: The student's concentration remained focused during the lecture.

Therefore, to find the best antonym for "lapse," it's important to consider the specific meaning in the sentence.