Antonyms of adj leakproof

1 sense of leakproof

Sense 1
leakproof -- (not subject to leaks)

INDIRECT (VIA tight) -> leaky -- (permitting the unwanted passage of fluids or gases ; "a leaky roof"; "a leaky defense system")

Similarity of adj leakproof

1 sense of leakproof

Sense 1
leakproof -- (not subject to leaks)
       => tight (vs. leaky) -- (of such close construction as to be impermeable; "a tight roof"; "warm in our tight little house")