The word "un deceivable" means unable to be deceived or unable to be tricked. Its antonyms include gullible, foolish, and naive, all of which refer to the tendency to fall for fraudulent schemes, lies, or trickery. Another antonym is credulous, which also connotes a lack of skepticism or critical-thinking skills. On the other hand, adjectives like astute, shrewd, and discerning serve as near-antonyms for "un deceivable" by indicating a person's ability to see through deception and manipulations. These contrasting terms reflect the spectrum of human vulnerability to deceitful tactics and highlight the importance of cultivating self-awareness, skepticism, and critical thinking in today's complex world.