What's "give up" mean and when's it used?

Native speaker’s answer
Rebecca
To "give up" means to stop trying to do something. It can also mean stopping using something you're attached to emotionally or by addiction. So you can use it when you longer want to do something and haven't finished it, or you're stopping something that you're attached to or have done for a while. Ex: I'm giving up swimming to start cycling. Ex: I gave up halfway through the race. I was scared I would injure myself.