airtight Synonyms

air-tight gas-tight hermetic bulletproof unassailable watertight burglarproof fail-safe water-repellent lightproof light-tight leakproof armoured windtight weatherproof waterproof unquestionable undeniable tight airproof unattackable closed tight damp-proof liquid-tight vacuum-packed unopened stormproof shatterproof sealing rustproof raintight rainproof proofer pressurized leak-proof hermetically sealed foolproof beyond dispute sound snug shut imperforate impenetrable impassable hermetically hermetical gastight flawless firm fireproof