Langtolang Multilingual Dictionary

a person or thing that takes or can take the place of another

an athlete who plays only when a starter on the team is replaced

someone who takes the place of another (as when things get dangerous or difficult)

• “the star had a stand-in for dangerous scenes”
• “we need extra employees for summer fill-ins”

put in the place of another; switch seemingly equivalent items

• “the con artist replaced the original with a fake Rembrandt”
• “substitute regular milk with fat-free milk”
• “synonyms can be interchanged without a changing the context's meaning”

be a substitute

• “The young teacher had to substitute for the sick colleague”
• “The skim milk substitutes for cream--we are on a strict diet”

act as a substitute

• “She stood in for the soprano who suffered from a cold”

capable of substituting in any of several positions on a team

• “a utility infielder”

serving or used in place of another

• “an alternative plan”

artificial and inferior

• “ersatz coffee”
• “substitute coffee”