a small gravity railroad, especially in an amusement park, having a train with open cars that moves along a high, sharply winding trestle built with steep inclines that produce sudden, speedy plunges for thrill-seeking passengers.
a car or train of cars for such a railroad.
any phenomenon, period, or experience of persistent or violent ups and downs, as one fluctuating between prosperity and recession or elation and despair.
to go up and down like a roller coaster; rise and fall.
a narrow road roller-coastering around the mountain; a light boat roller-coastering over the waves.
to experience a period of prosperity, happiness, security, or the like, followed by a contrasting period of economic depression, despair, or the like.
The economy was roller-coastering throughout most of the decade.
of, relating to, or characteristic of a roller coaster.
resembling the progress of a ride on a roller coaster in sudden extreme changeableness.
First recorded in 1885–90
First recorded in 1960–65
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The emotional roller coaster his comments and the subsequent backlash took us on are emblematic of a larger hesitancy and resistance to change.
From Slate • Jun. 15, 2026
Asian chip stocks rebounded, capping a roller coaster week amid geopolitical volatility, concerns over inflation and worries over a bubble in artificial-intelligence-related stocks.
From The Wall Street Journal • Jun. 12, 2026
In recent years, the IRS has been on a roller coaster.
From MarketWatch • Jun. 5, 2026
Equities were on an oil-slicked roller coaster today.
From Barron's • May 21, 2026
They must have used the flat roller coaster to move trade from town to town.
From "Uglies" by Scott Westerfeld
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
