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REFERENCE

fifth wheel

idiom
Meaning

Anything superfluous or unnecessary.


Origin

disputed origin

From the fact that since many vehicles such as carriages, coaches, wagons, prime movers, and trucks generally have four wheels on which they move, this component which resembles a wheel is the fifth. * (anything superfluous or unnecessary): Sense 3 refers to the fact that a fifth wheel is not needed for a four-wheeled vehicle to operate.

Examples
SIMPLE

I feel like a fifth wheel when I go out with them.

CONTEXTUAL

They invited me to dinner, but I felt like a fifth wheel while they talked about their vacation.

COMPLEX

Despite his host's polite attempts to include him in the conversation, he could not shake the uncomfortable sensation of being a fifth wheel at the dinner party.

Anchors to
Related idioms8entries
  1. 01

    big wheel

    A person with a great deal of power or influence, especially a high-ranking person in an organization.

  2. 02

    break the wheel

    To end a pattern of oppression, inequality, injustice, or abuse.

  3. 03

    hamster wheel

    To cycle fruitlessly.

  4. 04

    reinvent the wheel

    To do work unnecessarily when it has already been done satisfactorily by others; to attempt to devise a solution to a problem when a solution already exists.

  5. 05

    set one's shoulder to the wheel

    Synonym of put one's shoulder to the wheel.

  6. 06

    take the fifth

    To decline to comment, especially on grounds that it might be incriminating.

  7. 07

    take the wheel

    To assume control of a situation.

  8. 08

    third wheel

    An individual or object that serves no useful purpose.

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