Synonyms to leakproof
airtight, ballproof, bombproof, bulletproof, burglarproof, close, compact, corrosionproof, dampproof, dustproof, dusttight, fast, fire-resisting, fireproof, firm, flameproof, foolproof, gasproof, gastight, hermetic, hermetically sealed, holeproof, impervious to, 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, fire-resistant, fire-retardant, fire-retarded, fireproofed, insulate