Synonyms and related words :
bend, bend the knee, bend the neck, bend to, bob, bob a curtsy, bob down, bow, bow and scrape, bow down, bow the head, bow to, cringe to, crouch, crouch before, curtsy, do homage, do obeisance, duck, fall down before, grovel, kneel, kneel to, knuckle to, kowtow, make a leg, make a reverence, make obeisance, nod, salaam, scrape, stoop, truckle to