Synonyms of 'residual'
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You use leftover to describe an amount of something that remains after the rest of it has been used or eaten.
Leftover chicken makes a wonderful salad.
The remaining things or people out of a group are the things or people that still exist, are still present, or have not yet been dealt with.
Stir in the remaining ingredients.
Thesaurus for residual from the Collins English Thesaurus
Residual is used to describe what remains of something when most of it has gone .