Redouble (verb)

1. To double again; increase greatly in intensity, force, or amount.
2. To repeat or do again with greater effort.

Origin:

From the combining form "re-" meaning "again" + "double".

Examples:

1. The company redoubled its efforts to improve customer service after receiving complaints.
2. She redoubled her efforts to finish the project before the deadline.
3. After losing the first match, the team redoubled their efforts in practice to win the next game.
4. The government redoubled its efforts to combat poverty and unemployment.
5. He redoubled his efforts to learn a new language after a trip to a foreign country.