optimistic
AmericanOther Word Forms
Derived Forms
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superoptimisticadjective
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antioptimisticaladjective
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unoptimisticaladjective
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semioptimisticadjective
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antioptimisticallyadverb
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antioptimisticadjective
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nonoptimisticallyadverb
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preoptimisticadjective
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overoptimisticadjective
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nonoptimisticaladjective
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optimisticallyadverb
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unoptimisticallyadverb
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nonoptimisticadjective
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unoptimisticadjective
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semioptimisticallyadverb
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overoptimisticallyadverb
Etymology
Origin of optimistic
Explanation
An optimistic person thinks the best possible thing will happen, and hopes for it even if it's not likely. Someone who's a tad too confident this way is also sometimes called optimistic. If you see the glass as half-full when others see it as half-empty; if you look on the bright side of things, you're optimistic. If the chain falls off your rusty old bicycle, a tire goes flat, the frame cracks down the middle, the seat keeps twisting around, and you say, "But look! The little bell still works — I'm sure this bike will be fine," you're being very optimistic, though some might venture to call you "delusional."
Vocabulary lists containing optimistic
The SAT: Words to Capture Tone, List 1
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Positive Words to Describe a Person
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ACT Reading Test: Words to Capture Tone, List 1
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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.
He said the “New York financial people” who came to see him were too optimistic about how the average American sees China and the average Chinese sees America.
From The Wall Street Journal • Jun. 9, 2026
“They’ve probably become if not less optimistic, at least more nervous over the last 10 days or so,” said Mark Brewer, a political science professor at the University of Maine.
From Los Angeles Times • Jun. 9, 2026
She said the consultation would also include gaming in its look at screen time and she was optimistic because there is cross-party consensus on the harms of too much screen-time for children.
From BBC • Jun. 8, 2026
Musk has been optimistic about putting data centers in space, forecasting a two- or three-year timeline.
From MarketWatch • Jun. 8, 2026
Maybe Emma hadn’t fully understood before that there were times when Mom was only pretending to look and act and sound optimistic and cheerful?
From "The Strangers" by Margaret Peterson Haddix
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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.