solemnly (adv.)

• bleakly
• ceremoniously
• decorously
• demurely
• dismally
• drearily
• earnestly
• formally
• gloomily
• grandly
• gravely
• grimly
• heavily
• imposingly
• loftily
• magisterially
• majestically
• nobly
• regally
• ritually
• royally
• sadly
• sedately
• seriously
• soberly
• somberly
• staidly
• thoughtfully
• worthily