- (Received Pronunciation) IPA(key): /ˈwɔː.tə.taɪt/
- (Received Pronunciation) IPA(key): /ˈwɑː.tɚ.taɪt/, /ˈwɔː.tɚ.taɪt/
- So tightly made that water cannot enter or escape.
- (figuratively) So devised or planned as to be impossible to defeat, evade or nullify.
- a watertight contract; a watertight regulation
impossible to defeat, evade or nullify