unbreakable
Britishadjective
Explanation
Something that can't be shattered, cracked, or easily destroyed is unbreakable. If your new cellphone is truly unbreakable, it will hold up no matter how many times you drop it on the floor. Use this adjective for anything that's physically durable, like the unbreakable glass used for car windshields or the unbreakable plastic bottles that ketchup comes in. It's impossible, or nearly impossible, to break these things. Things that are figuratively unbreakable can't be destroyed either, like the unbreakable bond between twins or the unbreakable secret code used by spies.
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.
It was not helped by inauspicious introduction to the public in 2019 when Musk attempted to show off the Cybertruck's apparently unbreakable glass, only for it to shatter during a live demonstration.
From BBC ● Nov. 6, 2026
An unbreakable high school cheerleader, she embraced the role of hero, facing pushback from a shadowy government group, serial killers and a twisted family dynamic.
From Los Angeles Times ● Aug. 17, 2026
But as they navigated challenges together the sisters forged an unbreakable bond, with Sarah also working at the day centre Vicky attends.
From BBC ● May 14, 2026
If your "love" is a feeling of profound connection and unbreakable dedication, then my "love" is the mathematical certainty that my existence is meaningless without yours.
From The Wall Street Journal ● Apr. 12, 2026
“But don’t let that fool you. If the identity of the book you’re using remains secret, it’s an absolutely unbreakable code.”
From "The Bletchley Riddle" by Ruta Sepetys and Steve Sheinkin
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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
