Resignation

Resignation is the act of giving up or quitting an office or position.

Wesley Crusher resigned from Starfleet Academy in protest over the attempted removal of Native Americans from their colony on Dorvan V. 

After the Tezwa incident, Federation President Min Zife was forced to resign by a group of Starfleet officers, including Jean-Luc Picard, William Ross, Alynna Nechayev, Owen Paris, Edward Jellico, and Mamoru Nakamura. Unfortunately for Zife, he was assassinated almost immediately after resigning by Section 31.