·noun ·same·as Placard, 4 & 5.
II. Placate ·vt To Appease; to Pacify; to Concilate.
plācātē, adv., v. placo, P. a. fin. ...
A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
plācātē adv.with comp.placatus, calmly, composedly, quietly : omnia ferre: molestias placatius fer...
An Elementary Latin Dictionary