Synonyms and related words :
airtight, bold, close, compact, dampproof, dripproof, dustproof, dusttight, fast, fireproof, firm, fit for sea, floodproof, gasproof, gastight, hermetic, hermetically sealed, insulate, leakproof, lightproof, lighttight, moistureproof, oilproof, oiltight, proof, rainproof, raintight, sea-kindly, sealed, seaworthy, seepproof, shut fast, smokeproof, smoketight, snug, soundproof, staunch, stiff, stormproof, stormtight, tender, tight, water-repellant, watertight, weatherly, weatherproof, windproof, windtight