leaky

adjective

ˈlē-kē 

leakier; leakiest

: permitting fluid to leak in or out

leakily

ˈlē-kə-lē 

adverb

leakiness

ˈlē-kē-nəs 

noun

Examples of leaky in a Sentence

Recent Examples on the Web

If the environment around the technology is leaky, both points collapse. — James Lindsey, Forbes.com, 24 Sep. 2026

No bulky bottles, no leaky pumps – Hand Pop's press-to-activate wipes unfold to a generous 10 inches wide for a larger cleaning surface, delivering an alcohol-free, skin-friendly cleanse that fits in a gym bag, purse, pocket or luggage. — ABC News, 19 Sep. 2026

Linebacker Mo Toure has been leaky in coverage this season, and that continued Friday. — Barry Jackson, Miami Herald, 19 Sep. 2026

New Orleans moves the ball behind Tyler Shough, but turnovers and a leaky defense can only take you so far. — Los Angeles Times, 17 Sep. 2026

Word History

Etymology

leak entry 1 or leak entry 2 + -y entry 1

First Known Use

15th century, in the meaning defined above

Rhymes for leaky

• cheeky
• creaky
• freaky
• kiki
• sneaky
• squeaky
• streaky

Kids Definition

leaky

adjective

ˈlē-kē 

leakier; leakiest

: permitting fluid to leak in or out

a leaky boat

leakiness noun

Medical Definition

leaky

adjective

ˈlē-kē 

: relating to or being a mutant gene that changes the structure of the protein and especially an enzyme that it determines so that some but not all of its biological activity is lost

also : being such a protein with subnormal activity