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.

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

Or is it more like Freddy Krueger, coming back to haunt the gullible?

From The Wall Street Journal • Mar. 22, 2026

Maybe I would have too — I’m really gullible.

From Los Angeles Times • Dec. 18, 2025

"To come out as a strong critic of Bashir would have been in effect to paint his sister as a gullible fool," writes Webb.

From BBC • Nov. 20, 2025

And was she just being gullible, thinking this person was really writing to her?

From "Chasing Vermeer" by Blue Balliett

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