to assign / to appoint / to take up a post / office / responsibility / to let / to allow / to give free rein to / no matter (how, what etc) / classifier for terms served in office, or for spouses, girlfriends etc (as in 前任男友)
to entrust / to cast aside / to shift (blame etc) / to accumulate / roundabout / winding / dejected / listless / committee member / council / end / actually / certainly