Dictionary.com
Thesaurus.com

jumped-up

American  
[juhmpt-uhp] / ˈdʒʌmptˈʌp /

adjective

Chiefly British.
  1. having recently gained prominence or fame and appearing arrogant.


jumped-up British  

adjective

  1. informal suddenly risen in significance, esp when appearing arrogant

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of jumped-up

First recorded in 1825–35

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Those doofuses on YouTube, spinning out in their jumped-up Ford Mustangs?

From The Wall Street Journal • Nov. 6, 2025

Even more, the only British character in the musical, which is performed mostly in rap verse, is George III, whom Miranda has written as a jumped-up, flamboyant fop.

From The Guardian • Dec. 10, 2017

The people of England have no idea what to make of any of this, since the Tudors are at this point a jumped-up house.

From Salon • Apr. 13, 2017

Ms. Portman is dabbed with stage blood and digital goose flesh, stalked and spied on by the camera, wrapped in the jumped-up Tchaikovskian wail of Clint Mansell’s score.

From New York Times • Dec. 31, 2010

The guys animate their answers with fist pumping and jumped-up bro hugs and take-thats and all manner of behaviors that make it seem like we’re participating in football practice and not a dry Quiz Bowl.

From "Saints and Misfits" by S.K. Ali