leakproof

/หˆliหkpษนuf/

IPA: /L IY1 K P R UW0 F/

verb
  1. 1

    To make resistant to leakage.

adjective
  1. 1

    Resistant to leaks; hermetic, sound; as of a dry cell battery.

Source: https://en.wiktionary.org/wiki/leakproof