[ adjective ] naive and easily deceived or tricked
"at that early age she had been gullible and in love"
Used in print(Jack Kaplan, "The Health Machine Menace: Therapy by...)
With these gadgets - impressive to the gullible because of their flashing light_bulbs , ticks , and buzzes - he then carries_out a vicious medical con_game , capitalizing on people 's respect for the electrical and atomic wonders of our scientific age .
[ adjective ] easily tricked because of being too trusting
"gullible tourists taken in by the shell game"