watertight

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++wa·ter·tight /ˈwɔːtətaɪt $ ˈwɒːtər-, ˈwɑː-/ adjective  1. WATERa watertight container, roof, door etc does not allow water to get in or out 〔容器、屋顶、门等〕不透水的，防水的，水密的 → airtight2  PERFECTan argument, plan etc that is watertight is made very carefully so that people cannot find any mistakes in it 〔论点、计划等〕严密的，周密的；无懈可击的 Lucky for him, his alibi is watertight. 算他走运，不在犯罪现场的证据无懈可击。 Unless the ban is watertight, EU laws will overturn it. 这条禁令除非是十分严密，否则会被欧盟法律推翻。

Examples from the Corpus

watertight• There will be a rolling maintenance programme of the external walls and roof to ensure they continue to be wind and watertight.• The agreement drawn up when property changes hands must be absolutely watertight.• But the Basle convention fails to offer a watertight answer to the awkward question: which waste is hazardous?• It seemed the basketwork was not as watertight as intended.• On this framework they constructed an airand watertight chamber, with the curtain wall as one of its sides.• a watertight compartment• The cameras had been stored in watertight containers.• Most wooden ships were watertight in harbour, but they all leaked when they got out to sea.• A completely watertight one was obviously impossible; and it would also be sufficiently unusual to be suspicious.• To build these structures under water, the work place is enclosed by watertight walls.• Or thaw it in cold water in its watertight wrapper for more rapid thawing.

wa·ter·tight adjectiveChineseSyllable  

container, watertight Corpus a does roof, to water door allow etc not

watertight
wa‧ter‧tight /ˈwɔːtətaɪt $ ˈwɒːtər-, ˈwɑː-/ adjective
1. a watertight container, roof, door etc does not allow water to get in or out ⇨ airtight
2. an argument, plan etc that is watertight is made very carefully so that people cannot find any mistakes in it:
    Lucky for him, his alibi is watertight.
    Unless the ban is watertight, EU laws will overturn it.

water·tightBrE /ˈwɔːtətaɪt/ 🔊NAmE /ˈwɔːtərtaɪt/ 🔊, /ˈwɑːtərtaɪt/ 🔊 adjectivethat does not allow water to get in or out 不透水的；防水的；水密的◆a watertight container不漏水的容器(of an excuse, a plan, an argument, etc. 借口、计划、论点等) carefully prepared so that it contains no mistakes, faults or weaknesses 严密的；无懈可击的；天衣无缝的◆a watertight alibi无法驳倒的不在犯罪现场证据◆The case has to be made watertight. 理据必须做到无懈可击。🔊🔊