What's "regarding" mean? Is this a commonly used term?

Native speaker’s answer
Rebecca
"Regarding" is quite a common term! It's a preposition that means "with respect to," "concerning," or "in relation to." It lets the listener or reader know the subject you're going to talk about before talking about it. Or if there was an issue beforehand that you want to mention again. It is formal but is sometimes used in casual settings. Ex: Regarding the posters, what information should we put on them? Ex: Regarding Roger, I think you should speak to him about his retirement plans. Ex: So, regarding the dinner tonight, I'm going to be a little late.