Regain (verb)

1. Get or find (something) again after losing it.
2. Get back (something that one has lost) or regain control of (something).

Origin:

Late middle english: from old french regagner, from re- (expressing intensive force) + gagner "gain", from latin gannire "snatch".

Examples:

1. I will try my best to regain my lost ground.
2. She regained her composure after a few minutes.
3. Despite the setback, the team regained their confidence.
4. He regained his health after a long illness.
5. The company is trying to regain its reputation after the scandal.