as useless as a fifth wheel
 

* 1.not useful

2.not needed, redundant, (four wheels are sufficient) I sat there watching the four of them play bridge, and feeling as useless as a fifth wheel

English Related Words* a big wheel

* a fifth

* a fifth wheel

* a wheel within a wheel

* all wheel drive

* aluminium alloy wheel

* archibald wheel

* artillery wheel

* as useless as tits on a boar

* at the wheel

* back roller wheel

* back wheel

* back wheel brake

* balance wheel

* balancing wheel