jettison
Americanverb (used with object)
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to cast (goods) overboard in order to lighten a vessel or aircraft or to improve its stability in an emergency.
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to throw off (something) as an obstacle or burden; discard.
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Cards. to discard (an unwanted card or cards).
noun
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the act of casting goods from a vessel or aircraft to lighten or stabilize it.
verb
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to throw away; abandon
to jettison old clothes
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to throw overboard
noun
Other Word Forms
Derived Forms
Conjugated Forms
Present
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has jettisonedperfect 3rd person singular
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have jettisonedperfect
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am jettisoningprogressive 1st person singular
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has been jettisoningperfect progressive 3rd person singular
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have been jettisoningperfect progressive
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jettisoningparticiple
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are jettisoningprogressive
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jettisonssingular 3rd person
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is jettisoningprogressive 3rd person singular
Past
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had jettisonedperfect
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was jettisoningprogressive singular
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were jettisoningprogressive plural
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jettisonedparticiple
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had been jettisoningperfect progressive
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jettisonedsimple
Future
Etymology
Origin of jettison
1375–1425; late Middle English jetteson < Anglo-French; Old French getaison ≪ Latin jactātiōn- (stem of jactātiō ) jactation
Explanation
Jettison means to push to the side or toss away. If a boat is leaking or an airplane is running out of fuel, you can buy more time by jettisoning cargo, or throwing it overboard. The word jettison — dating, in its nautical meaning, from the 15th century in English — is commonly used figuratively as well as literally. You can jettison a friendship or an attitude. During the month that the Winter Olympics are aired on TV, figure-skating fans across the country jettison homework and other responsibilities in order to watch.
Vocabulary lists containing jettison
This Week in Words: September 25 - October 1, 2017
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100 SAT Words Beginning with "J," "K," and "L"
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Hamilton
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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.
Markets aren’t cynical enough to jettison their bets on tech, however, and continue to ride the sector’s extraordinary gains into the start of the new month.
From Barron's • Jun. 1, 2026
For one day a week, employees could jettison their suits and pantyhose and heels and wear… no one was quite sure at first, although Levi’s Dockers played a big role, at least for men.
From The Wall Street Journal • Nov. 28, 2025
High-profile announcements from companies over the past few years promising to jettison the bachelor’s degree as a hiring requirement largely haven’t resulted in action.
From MarketWatch • Oct. 25, 2025
We must jettison the belief in a false hierarchy of human value.
From Salon • Jan. 21, 2025
As stains and stench accumulated, the restaurant’s manager built a chute on the roof and threatened to jettison the garbage directly onto Olmsted’s precious lawns.
From "The Devil in the White City" by Erik Larson
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.
