return gift; return favour; revenge; change (in a cash transaction)
repetition; repeat; reiteration; repeatedly; again and again; continually
payback; tit for tat; retaliation; doing over again; redoing
recovery; undoing; recall
counterattack; slashing back; 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; reversal technique
endpaper (of a book); end-paper; facing (material sewn on the inside edge of a garment); looking back; triumphing over (a rival)
piledriver (sexual position)
muscle pain caused in reaction to excess massaging
piledriver (sexual position; male version)
reciprocating a like (on social media); like for like