What is another word for fill-in?
Pronunciation: [fˈɪlˈɪn] (IPA) 
There are many synonyms for the phrase "fill-in", each with its own unique meaning. Some of the most common synonyms include substitute, replacement, stand-in, backup, temporary replacement, and understudy. These words are often used to describe someone or something that is taking the place of a missing or absent person or thing. Other synonyms for fill-in may include phrases like "make up for", "cover for", or "take over for". Regardless of the context in which they are used, synonyms for fill-in are essential components of any language, providing people with the tools they need to express themselves effectively.
