| 1. | (initial capital letter ) a conventional title of respect for a man, prefixed to the name and to certain official designations (usually written as the abbreviation Mr.). |
| 2. | Informal. sir (used in direct address and not followed by the name of the man addressed): Mister, is this your umbrella? |
| 3. | (initial capital letter ) a title prefixed to a mock surname that is used to represent possession of a particular attribute, identity, etc.: Mister Know-it-all. |
| 4. | the informal or social title used in addressing a military warrant officer or any naval officer below the rank of commander. |
| 5. | (esp. in military schools and colleges)
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| 6. | Older Use. husband: You and the mister staying long? |
| 7. | to address or speak of as “mister” or “Mr.” |