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giant killer

British  

noun

  1. a person, sports team, etc, that defeats an apparently superior opponent

"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

Example Sentences

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A giant killer doll and dozens of faceless guards in tracksuits - among other motifs of the deadly games - marched down central Seoul to much fanfare.

From BBC • Jun. 30, 2025

Some, like the giant killer doll robot from “Red Light, Green Light,” are singular and inimitable.

From Salon • Jan. 5, 2025

Not looking that way now, but the Volunteers have giant killer potential if everything clicks.

From Seattle Times • Nov. 15, 2023

“If you had asked me 30 years ago, ‘Can we be confident we won’t be wiped out by a giant killer asteroid a week from next Tuesday?’

From Scientific American • Mar. 2, 2023

Written stories often leave very wrong impressions; and the history of David and Goliah has been given in an infant school, so that it would make an excellent counterpart to Jack, the giant killer.

From The Infant System For Developing the Intellectual and Moral Powers of all Children, from One to Seven years of Age by Wilderspin, Samuel