Synonyms to impervious to

airtight, ballproof, bombproof, bulletproof, burglarproof, close, compact, corrosionproof, dampproof, dustproof, dusttight, fast, fire-resisting, fireproof, firm, flameproof, foolproof, gasproof, gastight, hermetic, hermetically sealed, holeproof, leakproof, lightproof, lighttight, noiseproof, oilproof, oiltight, proof, proof against, punctureproof, rainproof, raintight, resistant, rustproof, sealed, shatterproof, shellproof, shut fast, smokeproof, smoketight, snug, soundproof, staunch, stormproof, stormtight, tight, water-repellant, waterproof, watertight, weatherproof, windproof, windtight, blind, ableptical, abstruse, alibi, amaurotic, ambuscade, ambush, ambushment, amorphous, apology, art, artful dodge, artifice, automatic, awning, back band, backstrap, bag of tricks, bamboozle, bandage, bat, be bright, beach umbrella, beacon, beam, bearing rein, becloud, beclouded, bedazzle, befog, bellyband, benight, benighted, bereft of light, bit, blank, blanket, blaze, blind drunk, blind man, blind the eyes, blind to, blind-alley, blinders, blindfold, blindfolded, blinds, blinker, blinkers, blotto, bluff