leakproof Synonyms

ballproof bulletproof watertight dripproof dampproof dripless floodproof moistureproof rainproof raintight showerproof stormproof waterproofed windproof airtight weatherproof waterproof bombproof hermetic impenetrable imperforate impermeable impervious proof safe sealed seaworthy shellproof snug tight damp-proof