takeback
An undo of a move you just made in a game.
A takeback is when you undo a move you just made, especially in chess or other board games. If you move your knight and immediately realize it was a terrible mistake, you might ask for a takeback to put the piece back and try something different.
In casual games between friends, takebacks are common and friendly. You're learning, your opponent is learning, and nobody minds rewinding one move to keep the game interesting. But in serious chess tournaments or competitions, takebacks aren't allowed. Once you let go of your piece, the move is final. This rule exists because part of becoming a strong player means thinking carefully before you act.
The word also appears in other contexts. In negotiations, someone might demand a takeback of benefits or wages they previously agreed to give, trying to undo an earlier promise. When people argue, one person might insist the other take back something hurtful they said.
Whether takebacks are acceptable depends on the situation. In a friendly learning game, they help everyone improve. In a competitive setting, they undermine fairness. Knowing when to allow takebacks and when to hold people to their choices is part of understanding the difference between practice and performance.