KanjiJLPT N3
Re-

re-, return, revert, resume, restore, go backwards

Mnemonic

You open the door to find a big figure standing there—the same one from yesterday! You slam the door shut, but the big guy keeps Re-turning. No matter what you do, he re-appears at the door, big as ever, grinning and demanding entry once more.
Additional thoughts
Picture a giant silhouette filling the entire doorframe, reappearing every time you shut it. The door frames the big figure who always comes back—re- captures that endless loop of return.
Quick recall
A big figure keeps Re-turning through the door no matter how many times you slam it shut.

Details

The keyword for 戻 is re-. This kanji conveys the idea of returning, going back, or restoring something to a previous state. It carries the sense of reverting or coming back to where one started, whether physically retracing one's steps or figuratively undoing something to its original condition. The prefix-like meaning of "re-" captures this notion of repetition or restoration inherent in the character.
On'yomi
れい
Kun'yomi
もど.す、もど.る

Used in kanji