WordNet (r) 3.0 (2006):

shatterproof
    adj 1: resistant to shattering or splintering; "shatterproof
           automobile windows" [syn: shatterproof, splinterless,
           splinterproof]

Moby Thesaurus II by Grady Ward, 1.0:

32 Moby Thesaurus words for "shatterproof":
   airtight, ballproof, bombproof, bulletproof, burglarproof,
   chip-proof, corrosionproof, dampproof, fire-resisting, fireproof,
   flameproof, foolproof, fractureproof, hermetic, holeproof,
   impervious to, infrangible, leakproof, noiseproof, nonbreakable,
   proof, proof against, punctureproof, resistant, rustproof,
   shellproof, soundproof, tight, unbreakable, unshatterable,
   watertight, weatherproof