Inflame with enthusiasm, anger, or another strong emotion, as in Her speech fired up the crowd in favor of her proposals. This expression dates from the early 1800s, when it referred literally to starting a fire in a furnace or boiler; its figurative use dates from the late 1800s.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
How to use fire up in a sentence
The presidential hopefuls fire up the faithful with promises to extend the Republican revolution to 2016, as Jeb Bush stays mum.
Fifteen years after its last execution, Pennsylvania is finding it difficult to fire up its death machine again.
But if you fire up Instagram and follow Rodrigo de la Calle, you might start salivating over such plants-turned-food.Rodrigo de la Calle Is Spain’s Vegetable Whisperer | Kara Cutruzzula | March 19, 2014 | THE DAILY BEAST
And candidates are practiced at hitting the hot buttons that fire up their base.Trash Talk Returns as Pols, Pundits Point Fingers Over Boston Bombing | Howard Kurtz | April 24, 2013 | THE DAILY BEAST
After losing the 2004 Iowa caucuses, Dean let out a rebel yell designed to fire up his supporters.Mitt Romney Rocked His Speech—Inside the Republican Convention Bubble | Lauren Ashburn | September 1, 2012 | THE DAILY BEAST
We saw the glow of the fire up among the trees on the ridge, and his shadow moving about as he threw on more wood.Three More John Silence Stories | Algernon Blackwood
The Emperor seemed to fire up with indignation at the taunt, but he sank into the chair on the throne.The Red Year | Louis Tracy
"I understand that you boys came near burning up the woods and village once with a fire up here," said Mr. Norton.The Boy Scouts of Bob's Hill | Charles Pierce Burton
For the air drives the smoke of the fire up the chimney, and of its own contribution the air has no smoke to give.The Posthumous Works of Thomas De Quincey, Vol. 1 (2 vols) | Thomas De Quincey
I see there's a couple of piles of wood left near the machine that will do to fire up with to-morrow morning.The Boy Chums in the Florida Jungle | Wilmer M. Ely