return the compliment

Strongest match

• swap

Strong matches

• alternate
• bandy
• bargain
• barter
• castle
• change
• commute
• correspond
• displace
• flip-flop
• interchange
• invert
• market
• network
• rearrange
• reciprocate
• replace
• reverse
• revise
• seesaw
• shift
• shuffle
• shuttle
• substitute
• switch
• traffic
• transact
• transfer
• transpose
• truck

Weak matches

• buy and sell
• cash in
• change hands
• contact with
• convert into
• deal in
• give and take
• go over to
• hook up
• horse-trade
• link up
• pass to
• pay back
• swap horses
• turn the tables

Strongest matches

• repay
• retaliate

Strong matches

• barter
• correspond
• interchange
• match
• recompense
• render
• reply
• requite
• respond
• retort
• return
• share
• square
• swap
• swing
• trade
• vacillate

Weak matches

• be equivalent
• feel in return
• give-and-take
• make up for
• pay one's dues
• scratch one's back
• serve out
• tit for tat

Strongest match

• pay back

Strong matches

• avenge
• reciprocate
• requite
• retaliate
• return
• revenge

Weak matches

• even the score
• get back at
• get revenge
• make reprisal
• settle the score
• square accounts

Strongest match

• reciprocate

Strong matches

• get
• pay
• recompense
• repay
• requite
• retrospect
• return
• revenge
• revive
• settle

Weak matches

• even the score
• exact retribution
• get back at
• make reprisal
• pay back
• square accounts
• strike back
• take an eye for an eye
• take revenge
• turn the tables on
• turn upon
• wreak vengeance

Strongest matches

• avenge
• get back at
• vindicate

Strong matches

• defend
• fix
• get
• justify
• match
• punish
• reciprocate
• redress
• repay
• requite
• retort
• return
• score
• square

Weak matches

• be out for blood
• even the score
• fight back
• fix one's wagon
• get even
• give comeuppance
• hit back
• kick back
• make reprisal
• pay back
• pay back in spades
• pay off
• settle up
• settle with
• stick it to
• take an eye for an eye
• turn the tables on
• venge