Definition: "Ungullibility" is a term in English that refers to an individual's tendency to be unfeeling or indifferent towards others, even when they are suffering. It can also refer to the inability of someone to feel empathy for another person's feelings or circumstances. In other words, "ungullibility" describes a behavior or attitude where an individual does not show any concern or care for the well-being of others, especially in situations that involve them. This could be due to a lack