reciprocates

v.

act, feel, or give mutually or in return

"We always invite the neighbors and they never reciprocate!"

alternate the direction of motion of

"the engine reciprocates the propeller"

Air logic continuously reciprocates cylinder
Biblical Prophecy Reciprocates Historical (In)tolerance
TRADE: IF U.S. RECIPROCATES, EU MAY SCRAP ALL FARM SUBSIDIES
Dear Abby: ; Teacher reciprocates former student's romantic feelings
A Son Reciprocates With the Gift of Life; Ex-Terp Cedric Lewis Donates a Kidney To Help His Father
Clinton Reciprocates Perot's Criticism; President Questions Why Texan Has Not Endorsed Economic Plan
Image forming apparatus with a brush roller that rotates and reciprocates
LADYSMITH HELPED SIREN, SIREN RECIPROCATES LAW ENFORCEMENT OFFICERS FROM SIREN AND BURNETT COUNTY GO TO LADYSMITH IN WAKE OF TORNADO...
Synergistic Interaction of Surfactant Blends in Aqueous Medium Reciprocates in Non-polar Medium with Improved Efficacy as Nanoreactor
THEY WILL PULL WATCH DUTY FOR SAILORS WHO RETURNED TUESDAY ON THE DONALD COOK COLE'S CREW GRATEFULLY RECIPROCATES.(LOCAL)