Synonyms for Rubbery:

adj.

resilient (adjective)
tough, elastic.
springy (adjective)
rubberlike.

n.

cardboard, glazed, glass, concrete, bone, acrylic, earthen, alabaster. rubbery (noun)
cartilaginous, elastic, rubberlike, gristly, tough.

Other synonyms:

Other relevant words:
cardboard, glazed, glass, concrete, bone, acrylic, earthen, alabaster.