1. publicly supporting or approving of someone or something
Usage: present participle of endorse
2. signing the back of a check to transfer ownership or enable cashing
Usage: financial context

Examples

• The senator is endorsing the new healthcare bill.
• Many celebrities are endorsing this brand of sneakers.
• She’s endorsing her opponent’s proposal for better schools.
• The bank requires you to be present when endorsing large checks.
• He’s endorsing the check over to his business partner.
• The newspaper is endorsing the incumbent mayor for reelection.