What does leakproof mean?
Leakproof means Resistant to leaks; hermetic, sound; as of a dry cell battery..
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/ˈliːkpɹuf/ · adjective
Resistant to leaks; hermetic, sound; as of a dry cell battery..
1904, Institution of Mining and Metallurgy (Great Britain), Bulletin, Institution of Mining and Metallurgy (Great Britain) (1904), p. 22, "In mining work difficult laying conditions, limited space, and movements of the ground, all combine to make the installation of a leakproof main with ordinary joints a very difficult matter."
1929, Victor Wilfred Pagé, Modern Aviation Engines: design-construction-operation and repair, […], Norman W. Henley Publishing Company (1929), p. 1589, "Leakproof tanks shall be provided on all airplanes for service use unless the tanks are completely protected by armor."
1967, Edward Locker Delmar-Morgan, Maintenance of Inboard Engines, Newnes (1967), p. 115, "There are two subdivisions in the flashlight dry cell range, the ordinary cheap one and the better-quality leakproof cell."
Use leakproof when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Leakproof means Resistant to leaks; hermetic, sound; as of a dry cell battery..
Common synonyms include seaworthy, watertight.
The opposite depends on the specific sense.
1904, Institution of Mining and Metallurgy (Great Britain), Bulletin, Institution of Mining and Metallurgy (Great Britain) (1904), p. 22, "In mining work difficult laying conditions, limited space, and movements of the ground, all combine to make the installation of a leakproof main with ordinary joints a very difficult matter."
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