third wheel
The term "third wheel" is commonly used to describe someone who feels unnecessary or out of place, especially when accompanying a romantic couple.
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Definition
B2Social Situations
(informal, idiomatic)A person who feels out of place or unnecessary when accompanying a couple.
Example
- I felt like a third wheel when I went to the movies with my friend and her boyfriend.
- Being a third wheel on their date was awkward and uncomfortable.
Similar
Terms that have similar or relatively close meanings to "third wheel":
fifth wheelthird partythird handbig wheelthird stringtriple threattraining wheel