Wait とは、「同じ場所に留まるか、別のことが起こるまで何もしない」という意味です 起こります」。 for 有無にかかわらず使用できます。

Put a tea bag into the cup, then add water and wait ( for ) a minute or two before taking it out.

I phoned the head office but I had to wait ( for ) five minutes before I spoke to anyone.

We waited ( for ) hours to get the tickets.

ない: Wait us …

I waited for the postman every day last week hoping that your present would arrive.

Not: I waited the postman …