Antonym of START

Start : begin or be reckoned from a particular point in time or space; come into being.
Close : only a short distance away or apart in space or time.
Shut : move (something) into position so as to block an opening; close.
End : a final part of something, especially a period of time, an activity, or a story.
Finish : bring (a task or activity) to an end; complete.

Antonym of Start is Finish