• left over,left-over

Fromleft(“remaining, abandoned”) +over(“excess”).

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leftover (notcomparable)

1. Remaining; left behind;extra;odd; inreserve.

   Do you want some of theleftover supplies from the event?

   I have someleftover spaghetti in the fridge, so I don't plan to cook tonight.

• When used after a verb (as part of a predicate phrase), use two separate words:

  I can walk for miles and still have energyleft over.

leftover (pluralleftovers)

1. Something left behind; anexcess orremainder.

   It's aleftover from yesterday, but it's still perfectly good.

2. (chiefly in theplural, usually of food) Remaining after a meal is complete or eaten for a later meal or snack.

   Notleftovers again!

   The entire wheel of cheese is aleftover from the party.