stand-in leader

noun
UK /ˈstænd ɪn ˈliː.dər/
US /ˈstænd ɪn ˈliː.dɚ/

A person who leads a group for a little while when the real leader is away.

When the teacher was sick, the stand-in leader helped the class line up.


OTHER MEANINGS

2. Someone who takes charge of a game or activity until the usual person returns.

Mia was the stand-in leader of the game while the coach got water.

3. A person chosen to speak or act for a group at a meeting.

The stand-in leader told everyone about the new playground rules.

4. A helper who guides a team when the main guide is busy.

Our stand-in leader showed the visitors where to sit.