verb, -nized, -niz⋅ing.| 1. | to exercise absolute power or control, esp. cruelly or oppressively (often fol. by over). |
| 2. | to govern despotically, cruelly, or oppressively. |
| 3. | to govern or reign as a tyrant. |
| 4. | to rule or govern tyrannically; treat oppressively. |