Antonyms of adj hermetic

1 sense of hermetic

Sense 1
hermetic -- (completely sealed; completely airtight)

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

Similarity of adj hermetic

1 sense of hermetic

Sense 1
hermetic -- (completely sealed; completely airtight)
       => tight (vs. leaky) -- (of such close construction as to be impermeable; "a tight roof"; "warm in our tight little house")