Gullible describes someone who is too trusting or naive, and as a result, they fall for scams, jokes, or lies easily. Why is "Gullible" Important? Knowing the term gullible is not just about expanding your vocabulary—it's about better understanding human behavior. GULLIBLE meaning: 1. easily deceived or tricked, and too willing to believe everything that other people say: 2…. Learn more. Gullible individuals may accept information or claims at face value, without critically evaluating their validity or considering potential ulterior motives. While trust and open-mindedness can be positive qualities, being excessively gullible can expose individuals to exploitation or scams. Master the word "GULLIBLE" in English: definitions, translations, synonyms, pronunciations, examples, and grammar insights - all in one complete resource.