5th wheel
Unwanted extra person
A 5th wheel is a large trailer that hitches to a pickup truck bed via a specialized coupling, popular for recreational vehicles.
The term also describes someone who feels superfluous in a group, especially an odd person out among couples: I felt like a 5th wheel at their dinner party.
Also written fifth wheel.
Shunned, rejected person
- misfitOne who doesn't fit in
- intruderUnauthorized person present
- interloperOne who enters uninvited
- unwantedNot wished for
unwelcome · tagalong · hanger-on · odd one out · extra · spare · leftover · alienated
Exceeding what suffices
- extraneousNot pertinent or essential
- unnecessaryNot essential or required
- unneededNot required at all
- surplusAmount exceeding requirement
dispensable · nonessential · gratuitous · excessive · spare · inessential · unwarranted · overkill
Mobile living quarters
- recreational vehicleMobile living quarters
- camperOne sleeping outside recreationally
- caravanTraveling group with goods
- travel trailerTowable recreational vehicle
hitch · tow vehicle · kingpin · gooseneck · pickup truck · campground · hookup · slideout
outcast
Shunned, rejected person
- misfitOne who doesn't fit in
- intruderUnauthorized person present
- interloperOne who enters uninvited
unwanted · unwelcome · tagalong · hanger-on · odd one out · extra · spare · leftover · alienated · marginalized
superfluous
Exceeding what suffices
- extraneousNot pertinent or essential
- unnecessaryNot essential or required
- unneededNot required at all
surplus · dispensable · nonessential · gratuitous · excessive · spare · inessential · unwarranted · overkill · deadweight
RV
Mobile living quarters
- recreational vehicleMobile living quarters
- camperOne sleeping outside recreationally
- caravanTraveling group with goods
travel trailer · hitch · tow vehicle · kingpin · gooseneck · pickup truck · campground · hookup · slideout · leveling
5th wheelkey player
Essential contributor to success
indispensable · cornerstone · linchpin · necessary · essential
5th wheellife of the party
Most entertaining guest
center of attention · guest of honor · key player · integral part · main attraction