What does "be bad at ~" mean? Is "be bad at ~" an opposite of "be good at ~"?
Native speaker’s answer
Rebecca
Yes, you are correct. To "be bad at something" is precisely the opposite expression of "be good at something." It is used to indicate that one is not very proficient or skilled at something. Ex: Although I'm good at math, I'm pretty bad at sports. Ex: Jenny is good at many different things, so her nickname is "genius."