Gullibility
/ˌɡʌləˈbɪləti/
Definition 1 of 1
Pro Tip 1/3Emotional Connotation
Gullibility often implies a person might feel embarrassed or ashamed for being tricked. 
She hid her face, her gullibility about the internet scam washing over her with regret.
Pro Tip 2/3Common Misuse
Don't confuse gullibility with generosity; they mean very different things. 
Offering help isn't gullibility; it's kindness, without intention of being deceived.
Pro Tip 3/3Cultural Context
Some cultures might view gullibility more negatively, as a sign of weakness or lack of intelligence. 
In his culture, gullibility was not just a mistake, it was a major flaw.