leftunders (noun) - leftover food that is wasted or discarded after going bad.
leftunder (adjective) - pertaining to leftunders or food that has gone bad after saving.

Etymology: variant of leftover.
As a noun: Toss those stinking leftunders into the garbage!
As an adjective: John found the leftunder fish covered in mold in the bottom crisper while cleaning out the fridge.
by Richard.J.Barbalace April 12, 2021
Get the leftunders mug.
Leftover food lost while eating on the couch and discovered under your body when you get up.
After I arose from the couch, I grabbed the leftunders that had missed my mouth.
by Frank S Beans April 3, 2020
Get the Leftunders mug.