adj

gullible

GUH-lihbl

adj

Easily fooled, deceived, or persuaded to believe something untrue.

"He's gullible enough to believe almost any excuse."

"The scam relied on gullible investors who never checked the numbers."

How to Use Gullible

Learner’s notes

In plain EnglishToo trusting — easily tricked or convinced of things that aren't true.

Common mistake

A well-known joke defines "gullible" as "not in the dictionary" — it is, in fact, a real word.

Easily confused with

credulous

Common pairings

gullible enough to gullible public naive and gullible

more gullible comparative, gullibles plural, most gullible superlative

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Can you complete this real example?

He's _____ enough to believe almost any excuse.

Likely from "gull" ("to trick, dupe") plus the adjective suffix "-ible."

Bible edible legible visible audible feasible tangible possible flexible sensible terrible crucible