tenured

adj.

1. 终身的；长期保有的
   that you can keep permanently
   1. a tenured post
      终身职位
2. 获终身聘用的；享有终身职位的
   having the right to keep their job permanently
   1. a tenured professor
      终身教授

adj

1. appointed for life and not subject to dismissal except for a grave crime
   1. an irremovable officer
   2. a tenured professor