Synonyms to back scratching

apple-polishing, ass-kissing, backscratching, barter, bootlicking, brown-nosing, cringing, even trade, fawnery, fawning, flunkyism, footlicking, groveling, handshaking, influence peddling, ingratiation, insinuation, lobbying, lobbyism, logrolling, mealymouthedness, obeisance, obsequiousness, parasitism, political influence, pork barrel, prostration, public opinion, social pressure, special-interest pressure, sponging, swap, swapping, switch, sycophancy, timeserving, toadeating, toadying, toadyism, trade, trading, truckling, tufthunting, wire-pulling