Ideographic: To walk 辶 backwards 反; 反 also provides the pronunciationRadical:

meaning for fǎn:

  • - to return (to)to return to
  • - to come (or go) backto go back and forth
  • - to go to and fro
  • - round tripto return to one's home townrestitution
  • - return of something to its original owner
  • - remittanceto repatriate (e.g. prisoners of war)
  • - to send back