"Leftover" and "left over" are two versions of the same term, which means remaining or not yet used as an adjective. Both can be used interchangeably, but "leftover" is considered more colloquial and informal, while "left over" is considered more formal.Here are some examples of how to use them: ^{writingexplained.org}+2 ^{1 2 3}

• Left over comes after verbs in sentences. For example, "There’s some pasta left over."
• Leftover comes before the noun it modifies. For example, "Leftover pasta."
• Leftover can also be a noun, where it refers to food that has not been eaten. For example, "Save the leftovers."