Mr. Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition abbreviation noun. a title used before a man's name. Example Sentence Spell the abbreviation for the word Mister. Mr. More Example Sentences Mr. Brown is a kind teacher. Synonyms mister; sir; gentleman Antonyms Mrs. Hear It! Say It! Write It! Mr. Switch to cursive Start Share with your friends: