to withdraw from a group, to drop out, to retire, to leave, to cancel one's membership

resignation

to resign

(anatomy) body hair

fall behind in one's payments

Yantai (a coastal prefecture-level city in northeastern Shandong, China)

abdication (the act of abdicating; the renunciation of a high office, dignity, or trust, by its holder)

abdicate

leaving a group such as a team or troupe

to leave a group