leakiest
lea-ki-est
adjective
Having the most holes or cracks, allowing liquid or gas to escape easily.
"That old watering can is the leakiest one."
Thesaurus
Synonyms: tattling, communicative, communicatory, talebearing, leaky, blabbermouthed, drafty, drippy, seeping, oozing, holey, oozy
Antonyms: tight