say it: GUHL-uh-buhl
gullible is an adjective meaning "naive and easily deceived or tricked". It carries 2 recorded senses.
naive and easily deceived or tricked
“at that early age she had been gullible and in love”
easily tricked because of being too trusting
“gullible tourists taken in by the shell game”
Definitions, synonyms and semantic relations for gullible come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.