The meaning of WATERTIGHT is of such tight construction or fit as to be impermeable to water except when under sufficient pressure to produce structural discontinuity.

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watertight adjective (NO DOUBTS) (of a theory, plan, or agreement) formed very carefully in every detail so that nothing is uncertain or in doubt:

Something that is watertight does not allow water to pass through it, for example because it is tightly sealed. The flask is completely watertight, even when laid on its side. The batteries are safely …

Definition of watertight adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

1. So tightly made that water cannot enter or escape. 2. Having no flaws or loopholes; impossible to fault, refute, or evade: a watertight alibi; a watertight contract.

Jan 25, 2026 · Adjective watertight (comparative more watertight, superlative most watertight) So tightly made that water cannot enter or escape. Synonyms: waterfast, waterproof, impervious, …

WATERTIGHT definition: constructed or fitted so tightly as to be impervious to water. See examples of watertight used in a sentence.

So tightly made that water cannot enter or escape. Watertight refers to something that is constructed or sealed in such a manner that water, or other liquids, cannot penetrate or pass through it.

What an absurd and anomalous position, but the result is very serious for it means that as we are all separated by these artificial barriers which we have erected, there is a danger of our working and …