• to rebound, to resuscitate, to revive, to wake
• to bring round, to resuscitate, to revitalize, to revive, to vivify
• regenerating, regenerative
• to animate, to brush up, to galvanize, to jazz up, to pep, to smarten, to tone up, to zing up
• resurrection, resuscitation
• to ginger sy up, to give a fillip to sy, to pep sy up, to perk sy up, to put some pep into sy