[1] : WordNet (r) 2.0

hanky panky
     n : verbal misrepresentation intended to take advantage of you
         in some way syn: trickery, hocus-pocus, slickness,
          jiggery-pokery, skulduggery, skullduggery
see also:
trickery hocus-pocus slickness jiggery-pokery skulduggery skullduggery 

[2] : Moby Thesaurus II by Grady Ward, 1.0

31 moby thesaurus words for "hanky panky":
   adulterous affair, adultery, affair, amour, conjuration, cuckoldry,
   entanglement, escamotage, eternal triangle, flirtation,
   forbidden love, hocus-pocus, hokey-pokey, illicit love, infidelity,
   intrigue, jiggery-pokery, jugglery, juggling, legerdemain, liaison,
   love affair, monkey business, mumbo jumbo, prestidigitation,
   romance, romantic tie, sleight of hand, triangle, trickery,
   unfaithfulness

Hanky Panky >> H Words
Hanky Panky, definition of term: Hanky Panky
hanky+panky_pag1.html

Hanky >> H Words
Hanky, definition of term: Hanky
hanky_pag1.html

Hank Panky >> H Words
Hank Panky, definition of term: Hank Panky
hank+panky_pag1.html