I. (h)iz, ˌhiz adjective
Etymology: Middle English, from Old English, genitive of hē he
Date: before 12th century
: of or relating to him or himself especially as possessor, agent, or object of an action
his house
his writings
his confirmation
— compare he I
II. ˈhiz pronoun, singular or plural in construction
Date: before 12th century
: that which belongs to him — used without a following noun as a pronoun equivalent in meaning to the adjective his