4
tight
3
rainproof
3
waterproof(adjective, water)
2
airtight
2
hermetic
2
impermeable
2
waterproofed
2
watertight
1
continent
1
dripless
1
gas-tight
1
impenetrable
1
impervious
1
leakproof
1
snug
1
uncommunicative
0
air-tight
0
callous
0
closemouthed
0
cold
<12>
11 years ago|760 views|share |citing 
APASmart Define. (2015). leaky thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/leaky/thesaurus/antonyms
ChicagoSmart Define. 2015. "leaky thesaurus" https://smartdefine.org/leaky/thesaurus/antonyms (accessed September 21, 2026).
HarvardSmart Define 2015, leaky thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/leaky/thesaurus/antonyms>.
MLASmart Define. "leaky thesaurus" 20 July 2015. Web. 21 September 2026. <https://smartdefine.org/leaky/thesaurus/antonyms>