THESAURUS
solemnly
bleakly, ceremoniously, decorously, demurely, dismally, drearily, earnestly, formally, funereally, gloomily, grandly, gravely, grimly, heavily, imposingly, in due form, in set form, loftily, magisterially, majestically, nobly, pro forma, regally, ritualistically, ritually, royally, sadly, sedately, seriously, sober-mindedly, soberly, sobersidedly, somberly, sombrously, staidly, stately, thoughtfully, venerably, with dignity, worthily