IPA: /ˈliːkɪnəs/
KK: /ˈlikɪnəs/
The quality or state of allowing liquid or gas to escape through a hole or crack.
The leakiness of the old roof caused water to drip into the living room during the rain.
Leakiness → It is formed from "leak" (from Old English "leacian", meaning to flow or escape) and "-ness" (meaning the state or quality of). The word "leakiness" refers to the state of being able to leak or the quality of allowing fluid to escape.
Think of the word 'leak' which means to flow or escape, and remember that 'leakiness' describes the quality of being able to leak.