normal
adj. relating to what is considered standard, average, typical, or healthy. This general meaning is applied in a variety of different contexts, including statistics (referring to scores that are within the usual or expected range), biology (referring to the absence of malformation or other pathology), and development (referring to progression and growth that are comparable to those seen in others of similar ages). However, the term is most often applied to behavior that conforms to a culturally accepted norm, especially as an indication that a person is mentally healthy and does not have a psychological disorder.