Definitions

gullible

[guhl-uh-buhl] / ˈgʌl ə bəl /

ADJECTIVE

naive, trusting

Synonyms

STRONGEST

foolish unsophisticated unsuspecting wide-eyed

WEAK

being a sucker believing biting credulous easily taken in easy mark falling hook line and sinker green innocent kidding oneself mark silly simple sucker susceptible swallowing whole taken in taking the bait trustful tumbling for unskeptical

Antonyms

WEAK

astute discerning knowledgeable perceptive suspicious unbelieving untrusting wise

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.

"People say that victims are gullible but the scams are put together well", they are very "sophisticated", said a source close to the investigation.

From Barron's • Jun. 5, 2026

As Roderigo, whom Iago manipulates like a bored puppeteer idly pulling the strings, Daniel Velez is idiotically gullible.

From The Wall Street Journal • Jun. 1, 2026

Maybe Roher believes this is what our increasingly gullible, truth-challenged citizenry needs from an explanatory doc: a flashy, kindhearted reminder that we’re the change we need to be.

From Los Angeles Times • Mar. 27, 2026

Professional and institutional investors turn positive on stocks at the beginning of a bull market, and gradually unload their appreciated equities to more gullible retail investors.

From MarketWatch • Mar. 25, 2026

In reality, the United States wasn’t as gullible as it had been portrayed.

From "Spooked!" by Gail Jarrow

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