The term PERSON ADDRESSED is composed of two words, THOU and YOU. THOU is an archaic English pronoun used to refer to a single person in the second person singular form. It is often used in literature and poetry to create a sense of formality or reverence. YOU is a modern English pronoun used to refer to a single person in the second person singular form. It is used in everyday language to address someone directly. Together, these two words represent the person being addressed.