Part of speech:
Having no flaws or loopholes; impossible to fault, refute, or evade:
Able to withstand; not susceptible
Made of or covered with material that doesn't allow water in.
Find another word for leakproof. In this page you can discover 6 synonyms, antonyms, idiomatic expressions, and related words for leakproof, like: watertight, impervious, waterproof, tight, floodproof and moistureproof.