us

We don’t traditionally think of us as having synonyms, but there are several situations in which it can replace—or be replaced with—another word, phrase, or series of words.

we

Sometimes, you can reword a sentence that uses the object form us to instead use the subject form we, or vice versa. For example, instead of saying Luckily, the storm didn’t affect us, you could say Luckily, we weren’t affected by the storm.

me and _____ 

The main job of us is to serve as a way of not having to name every person in a group of two or more people. Sometimes, though, it’s best to be clear by naming them. Instead of saying Dave walked home with us, you could say Dave walked home with me and Emily (or Emily and me).

all of us

The phrase all of us can be used instead of us by itself to emphasize the entirety of the group that’s present, as in This gift is from all of us.