To overdo something means to do too much of it or make it happen too many times. For example, if you eat one too many desserts for dessert, that's overdoing it.
When we say "overdo" something, we usually mean doing more than what is considered normal or reasonable. It can be in the context of food, work, activities, or even speaking. Imagine a friend who always talks excessively on their phone and then starts complaining about having no free time left. They're overdoing it with the talking.
In some cases, especially when we're using "overdo" as a verb, we might be thinking of an action that's just too much. If someone takes a huge loan from a bank without thinking carefully about how they'll pay it back, that can be seen as overdoing it. It's doing more than is safe or smart.
But in other situations, especially when "overdo" is used to describe something like work or studying, we're looking at an issue of balance. If you consistently do way too much and then burn out, that's overdoing it.
To do too much; to exceed what is proper or true in doing; to carry too far.
Example: I overdid the sweets during the holidays and put on some weight.
