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.

We’ve been worrying about supersmart computers, but we should also worry about super-adorable computers manipulating gullible people.

From The Wall Street Journal • May 3, 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

The fundamental problem is that hopeful investors are too often gullible investors.

From MarketWatch • Feb. 6, 2026

Morrow poses this riddle to an unsuspecting Hybrid once he figures out their adult bodies are governed by the malleable, gullible minds of children.

From Salon • Sep. 8, 2025

“The guilt, the terrible, gullible guilt ate up my insides.”

From "Saints and Misfits" by S.K. Ali

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