watertight


Concise Oxford English Dictionary © 2008 Oxford University Press:
watertight/ˈwɔːtətʌɪt/
adjective
  • 1 closely sealed, fastened, or fitted so as to prevent the passage of water.
  • 2 (of an argument or account) unable to be disputed or questioned.
'watertight' also found in these Oxford entries:

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