Acceptability is like when you eat something and you think it tastes really good. That means the food is acceptable to you. But if you try something and you don't like the way it tastes, then it's not acceptable.
But acceptability can also be about more than just taste. For example, if someone offers you a toy to play with and you think it's fun, then it's acceptable to you. But if they give you a toy you don't like, then it's not acceptable.
Acceptability can be different for different people. Some people might really like broccoli and think it's delicious, while other people might think it tastes terrible. That's why it's important to respect other people's opinions about what is acceptable to them.
In many cases, acceptability is about following rules or standards that are set by a group of people. For example, if you're playing a game with your friends, there might be rules that everyone has to follow in order for the game to be fair. If someone doesn't follow those rules, then their behavior might not be acceptable to the group.