preconceived
Americanadjective
verb
Etymology
Origin of preconceived
First recorded in 1575–85; preconceive ( def. ) + -ed 2 ( def. ) for the adjective; preconceive ( def. ) + -ed 1 ( def. ) for the verb
Explanation
When you already have an opinion about something before you've given it much thought, you can call that a preconceived idea. Many people have preconceived ideas about teenagers. It's almost always an idea or opinion that's described as preconceived. You might have preconceived ideas about what college will be like — in other words, you've formed a strong sense of what the experience will be before knowing much about it. Most preconceived ideas don't come from strong evidence, and many aren't true. The adjective is formed from pre, "before," and conceived, which here means "taken into the mind," from the Latin concipere, "to take in and hold."
Vocabulary lists containing preconceived
The Alchemist
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Listen, Slowly
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Florida's B.E.S.T. Common Prefixes: pre-
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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.
But with what seems like a Ripper copycat on the loose, everyone needs to put aside their preconceived notions and figure out what’s going on.
From Los Angeles Times ● Jun. 8, 2026
Delevingne said she has used humour and being self-deprecating in the past but had to learn to take herself more seriously when it came to music, knowing that people will have preconceived ideas about her.
From BBC ● Jun. 2, 2026
When epidemiologist Antoine Flahault addressed a French governmental health conference alongside other health experts on Tuesday, he urged scientists, journalists and the general public to "be wary of preconceived notions".
From Barron's ● May 13, 2026
The Hell Cats, as a group, challenge voters’ preconceived notions about who can lead in the United States.
From Salon ● Feb. 12, 2026
It is just that we try to fit the waves to our preconceived ideas of positions and velocities.
From "A Brief History of Time: And Other Essays" by Stephen Hawking
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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.