cohost Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition verb. to share the hosting duties of a show or event. Example Sentence She will cohost the award show with another actor. More Example Sentences They decided to cohost the party together. Synonyms partner; co-presenter; co-organizer Antonyms guest Hear It! Say It! Write It! cohost Switch to cursive Start Share with your friends: