1. watertight - Adjective
2. watertight - Adjective Satellite
without flaws or loopholes
not allowing water to pass in or out
Source: WordNetWe don't need fossils – the case for evolution is watertight without them; so it is paradoxical to use gaps in the fossil record as though they were evidence against evolution. Richard Dawkins
An enduring legacy of Balamuralikrishna is the wider accessibility of classical kirtanas to the public. Many of his contemporaries tend to treat classical and popular music as watertight compartments. M. Balamuralikrishna
I claim that human mind or human society is not divided into watertight compartments called social, political and religious. All act and react upon one another. Mahatma Gandhi
Discovering that a fraud exists is only the first step. It has to be proved and the proof has to be absolutely watertight. Lindsey Davis
Wouldn't it be better to have a watertight law designed to catch the guilty, rather than a press release law designed to catch the headlines? William Hague
Ensure that your script is watertight. If it's not on the page, it will never magically appear on the screen. Richard E. Grant