1. a person or thing that replaces someone or something else

Examples

• The new employee served as a replacer for the retiring manager.
• This battery is a perfect replacer for the old one.
• The coach brought in a replacer when the star player was injured.
• We need to find a suitable replacer for our broken printer.
• The understudy acted as a replacer for the lead actor.
• The company hired a temporary replacer while searching for a permanent solution.