<p><strong>Noun</strong></p><ul><li>Mister, a conventional title of respect for a man, prefixed to the name and to certain official designations (usually written as the abbreviation Mr.).</li><li>Informal: sir (used in direct address and not followed by the name of the man addressed): Mister, is this your umbrella?</li><li>A title prefixed to a mock surname that is used to represent possession of a particular attribute, identity, etc.: Mister Know-it-all.</li><li>The informal or social title used in addressing a military warrant officer or any naval officer below the rank of commander.</li><li>(Especially in military schools and colleges) a term of respect used by cadets in addressing upperclassmen: used with surname.</li><li>A term of disparagement used by upperclassmen in addressing cadets: Mister, tuck in that shirttail!</li><li>Older Use: husband: You and the mister staying long?</li></ul><p><strong>Verb</strong></p><ul><li>(Used with object) to address or speak of as “mister” or “Mr.”</li></ul>