rubber-stamp

v [Tn] (often derog 常作贬义) approve (sth) automatically and without proper consideration 未经适当考虑便机械地赞同（某事物）.

RSV, RSVP, Rt Hon, Rt Rev (also Rt Revd), RU, rub, rub (sb/oneself/sth) down, rub (sth) off, rub away, rub down, rub off, rub out, rub sb out, rub sth in/into sth, rub sth up, rubber, rubber goods, rubber plant, rubber stamp, rubber-neck, rubberize, rubberise, rubbery, rubbing, rubbish, rubbishy, rubble, rubella, Rubicon, rubicund, rubric, ruby, ruby wedding, RUC, ruche, ruched, ruck, rucksack, ruckus, ructions, rudder,