Home Dee Dee Word of the Day – Aug. 2 – Gullible Dee Dee Word of the Day – Aug. 2 – Gullible By Staff mB - August 2, 2011 676 Adjective: Gullible (GULL-uh-bul) Definition: Easily duped or cheated Sample sentence: Carl’s sister couldn’t believe that he was gullible enough to fall for yet another urban legend.