Inborn/ˌɪnˈbɔːrn/ Definition 1 of 1Pro Tip 1/3Biological Traits Use 'inborn' when referring to characteristics decided by genetics, like eye color. His inborn blue eyes came from his mother's side of the family. Pro Tip 2/3Beyond Learning Use 'inborn' for skills or tendencies not acquired through learning or experience. The baby's inborn instinct to grasp objects is fascinating. Pro Tip 3/3Personality Attributes 'Inborn' is also used for innate aspects of someone's personality, like shyness. She showed an inborn shyness even as a small child.