anti-leak

adjective

an·​ti-leak

ˌan-tē-ˈlēk,

ˌan-tī- 

variants or less commonly antileak

: serving or intended to prevent leaks

… until evidence is developed that America's system of free-flowing information actually harms the country's interests, additional anti-leak laws seem unwarranted.

—Deborah M. Levy

an antileak compound for automobile radiators

Word History

First Known Use

1884, in the meaning defined above