The Collaborative International Dictionary of English v.0.48:

Bendable \Bend"a*ble\, a.
   Capable of being bent.
   [1913 Webster]

WordNet (r) 3.0 (2006):

bendable
    adj 1: capable of being bent or flexed or twisted without
           breaking; "a flexible wire"; "a pliant young tree" [syn:
           bendable, pliable, pliant, waxy]

Moby Thesaurus II by Grady Ward, 1.0:

42 Moby Thesaurus words for "bendable":
   adaptable, bending, compliant, ductile, elastic, extensible,
   extensile, fabricable, facile, fictile, flexible, flexile,
   flexuous, formable, formative, giving, impressible, impressionable,
   like putty, limber, lissome, lithe, lithesome, malleable, moldable,
   plastic, pliable, pliant, receptive, responsive, sensitive,
   sequacious, shapable, springy, submissive, supple, susceptible,
   tractable, tractile, whippy, willowy, yielding