Changed one's mind is a phrase that describes when someone alters their opinion or decision. This can be done in a variety of ways, such as reneging, swaying, reversing, and flipflopping. Reneging is when someone goes back on a promise or commitment they made. Swaying is when someone is influenced by another person or thing to change their opinion. Reversing is when someone completely changes their opinion or decision. Flipflopping is when someone changes their opinion multiple times.