third wheel
US /ˈθɜrd ˌwil/
UK /ˈθɜrd ˌwil/
1.
お邪魔虫, 第三者
a person who is in a situation with two other people who are romantically involved or who are very close friends, making the third person feel awkward or unwanted
:
•
I felt like a third wheel on their date.
彼らのデートでお邪魔虫のように感じた。
•
They're always together, so I often feel like a third wheel when I'm with them.
彼らはいつも一緒なので、一緒にいるとよくお邪魔虫のように感じる。