adjective

relating or appropriate to grand and formal occasions.

a Great Hall where ceremonious and public appearances were made

dignified,majestic,imposing,impressive,solemn,stately,awe-inspiring,regal,imperial,elegant,grand,glorious,splendid,magnificent,resplendent,important,august,portentous,formal,courtly,punctilious,courteous,civil,deferential,stiff,rigid,affected,slow-moving,measured,deliberate,precise,scrupulous,starchy,just so