Antonyms of adj drafty
1 sense of drafty
Sense 1
drafty, draughty -- (not airtight)
INDIRECT (VIA leaky) -> tight -- (of such close construction as to be impermeable; "a tight roof"; "warm in our tight little house")
Similarity of adj drafty
1 sense of drafty
Sense 1
drafty, draughty -- (not airtight)
=> leaky (vs. tight) -- (permitting the unwanted passage of fluids or gases ; "a leaky roof"; "a leaky defense system")