the.com/spillage
The gap between what you poured and what arrived, paid in regret.
means The amount of a liquid or substance that escapes its container and is lost or wasted.
from From spill, rooted in Old English spillan, meaning to destroy or squander, plus the noun-making -age that loves to quantify loss.
Security jargonClassified data leaking is called information spillage too.
Built-in expectationRetailers budget spillage as routine, unavoidable inventory loss.
Acoustic cousinIn audio, spillage is sound bleeding into the wrong mic.