verb, -cat⋅ed, -cat⋅ing.| 1. | to renounce or relinquish a throne, right, power, claim, responsibility, or the like, esp. in a formal manner: The aging founder of the firm decided to abdicate. |
| 2. | to give up or renounce (authority, duties, an office, etc.), esp. in a voluntary, public, or formal manner: King Edward VIII of England abdicated the throne in 1936. |