(Sir (adult male of any age)
(Ma"am (adult female - North American)
(Madam (adult female)
(Mr + last name (any man)
(Mrs + last name (married woman who uses her husband"s last name)
(Ms + last name (married or unmarried woman; common in business)
(Miss + last name (unmarried woman)
(Dr + last name (some doctors go by Dr + first name)
(Professor + last name (in a university setting)
