Synonyms and related words :
airtight, ballproof, bombproof, bulletproof, burglarproof, corrosionproof, dampproof, dripproof, fire-resisting, fireproof, flameproof, floodproof, foolproof, hermetic, holeproof, impervious to, moistureproof, noiseproof, proof, proof against, punctureproof, rainproof, raintight, resistant, rustproof, seepproof, shatterproof, shellproof, soundproof, stormproof, stormtight, tight, waterproof, watertight, weatherproof