1 : to go back or return to (an earlier state, condition, situation, etc.) She has reverted (back) to her old habits. My blood pressure has reverted to normal.

What is the synonym of reverted?

In this page you can discover 28 synonyms, antonyms, idiomatic expressions, and related words for revert, like: go back, backslide, return, regress, lapse, change-back, retrograde, retrogress, reverse, recrudesce and recur.

Is it correct to say reverted back?

Since revert means return back, go back etc., “revert back” may not be grammatically correct. “I will revert to you later” is grammatically correct. But the meaning is not what you think. The meaning is “Sometime later I will become you or change back to you (also implies that sometime back I was you)”.