1. performs organized cheers and chants to encourage a sports team or crowd
Usage: third person singular present tense
2. enthusiastically promotes or supports something
Usage: informal; third person singular present tense

Examples

• She cheerleads for the varsity basketball team.
• The squad cheerleads at every home game.
• He cheerleads the new policy at every meeting.
• The company cheerleads its environmental initiatives.
• Maria cheerleads with great enthusiasm and energy.
• The politician cheerleads for tax reform constantly.