The Collaborative International Dictionary of English v.0.48:

Genuflect \Gen`u*flect"\, v. i. [imp. & p. p. Genuflected; p.
   pr. & vb. n. Genuflecting.] [See Genuflection.]
   To bend the knee, as in worship.
   [1913 Webster] genuflection

WordNet (r) 3.0 (2006):

genuflect
    v 1: bend the knees and bow in church or before a religious
         superior or image
    2: bend the knees and bow in a servile manner [syn: scrape,
       kowtow, genuflect]

Moby Thesaurus II by Grady Ward, 1.0:

33 Moby Thesaurus words for "genuflect":
   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