return gift;  return favour (favor);  revenge;  change (in a cash transaction)
 repetition;  repeat;  reiteration;  repeatedly
 payback;  tit for tat;  retaliation;  doing over again;  redoing
 recovery;  undoing;  recall
 railway switchback;  twisting backward knee trip
 by return;  (call or write back) without delay;  lapel;  cuff;  going back;  returning;  chorus
 reflection;  reflected light;  reflected heat;  glare
 rally;  recovery;  comeback;  winding (thread, etc.)
 counterattack (kendo, judo, etc.);  reversal technique
 endpaper (of a book);  end-paper;  facing (material sewn on the inside edge of a garment);  looking back;  triumphing over (a rival)
 muscle pain caused in reaction to excess massaging