praestigialiter

praestigialiter [ML < CL praestigia+-alis+-ter] , by trick or magic. 1196 si ‥ [mali angeli] ‥ illa ‥ quadam angelice nature potentia ‥ partim ~iter et fantastice ‥ partim etiam in veritate ‥ valeant exhibere W. Newb. HA I 87.