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Synonyms

sky-high

American  
[skahy-hahy] / ˈskaɪˈhaɪ /

adverb

  1. very high.

    Costs have gone sky-high since the war.
sky-high British  

adjective

  1. at or to an unprecedented or excessive level

    prices rocketed sky-high
"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

adverb

  1. high into the air

  2. to destroy completely

"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 sky-high

First recorded in 1810–20

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.

Travel is getting more expensive by the day and Americans will be hit by sky-high costs for a summer getaway.

From Barron's • Apr. 14, 2026

Travelers face sky-high costs for a summer getaway, especially if they are flying to their destinations.

From Barron's • Apr. 14, 2026

At the same time, California’s powerful unions are under pressure from members to keep up with sky-high housing costs in one of the nation’s most expensive metro areas.

From The Wall Street Journal • Apr. 13, 2026

Despite a predicted uptick in EV interest driven by sky-high gas prices, the market isn’t welcoming for newcomers at the moment.

From Los Angeles Times • Mar. 26, 2026

Having a day off without a sky-high pile of catering orders or a couple of hyperactive boys leaping around is good for her.

From "A Place at the Table" by Saadia Faruqi and Laura Shovan

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.