watertight   (Sound)

The watertight has 2 Senses.

• watertight
• not allowing water to pass in or out
• 水を中または外に通させないさま

• bulletproof, watertight, unassailable, unshakable
• 要害堅固
• without flaws or loopholes; "an ironclad contract"; "a watertight alibi"; "a bulletproof argument"
• 欠点も抜け穴もなしで