choosingamate
nounUK /ˈtʃuːzɪŋ əˌmeɪt/
US /ˈtʃuːzɪŋ əˌmeɪt/
A choosingamate is a friend you pick to be your partner in a game or activity.
At the start of the game, each player picked a choosingamate to be on their team.
OTHER MEANINGS
2. A person selected to help make a decision with someone else.
The two captains acted as choosingamates when they decided who would play first.
3. A special friend you always choose for group work.
Mia is my choosingamate whenever we have to do a class project.
4. A partner chosen for a dance or contest.
He asked his choosingamate to join the dancing competition with him.