Find Antonyms
leakless Antonyms
Opposite of leakless
Pinning down the opposite of leakless requires matching its exact sense, so the antonyms and opposite words below are paired with a clear adjective definition and ranked by contrast strength.
• adjective (Context 1)
Having no leaks; designed or sealed so as to prevent the escape or entry of liquid or gas.
Usage Example
"The chemical processing plant installed leaky magnetic-drive pumps to prevent hazardous emissions."
Strongest
leaky
Strong
porous
permeable
Similar words to leakless
Words similar to leakless shift depending on context. Common synonyms include:
leakproof
airtight
watertight
hermetic
sealed
Cite this Entry
Wordmom. (2026). Antonyms for Leakless. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/leakless