Reassure (verb)

1. To restore confidence or remove doubts from someone.
2. To give confidence or security to someone.
3. To make someone feel better.

Origin:

From re- ("again") + assure, from old french asegurier ("to assure"), from vulgar latin *assicurare, from latin ad ("to") + securus ("secure, free from care").

Examples:

1. The doctor reassured the patient that everything was going to be alright.
2. The mother reassured the child that there was nothing to be afraid of.
3. The manager reassured the employees that the company was stable.
4. The coach reassured the team that they could win the game.
5. The friend reassured the person that they were not alone.