- a utility infielder.
- an alternative plan.
- ersatz coffee.
- She stood in for the soprano who suffered from a cold.
- substitute coffee.
- substitute regular milk for fat-free milk.
- synonyms can be interchanged without a changing the context's meaning.
- the con artist replaced the original with a fake Rembrandt.
- The skim milk substitutes for cream--we are on a strict diet.
- the star had a stand-in for dangerous scenes.
- The young teacher had to substitute for the sick colleague.
- we need extra employees for summer fill-ins.