Is the correct possessive form of Boss, Boss's or Boss' or something else? English Grammar Parts of Speech Pronouns 1 Answer Bob K. May 28, 2016 Singular, boss's; plural, bosses'. Answer link Related questions What is a demonstrative pronoun? What is the difference between an adjective vs pronoun? What is the difference between relative and interrogative pronouns? What is an interrogative pronoun? What is the difference between an interrogative adjective and an interrogative pronoun? Which of the pronouns used in this sentence is in the possessive case? What are the pronouns in the following sentence?: He walked over to them. What are the pronouns in the following sentence?: He walked over to her neighbor's house. What are the pronouns in the following sentence?: According to the historian, the purpose of the... What are the pronouns in the following sentence?: The mailman will be happy if you keep your dog inside. See all questions in Pronouns Impact of this question 9769 views around the world You can reuse this answer Creative Commons License