ceremonious (adj.)

• attentive
• baptismal
• careful
• ceremonial
• chivalric
• chivalrous
• civil
• conventional
• correct
• courteous
• courtly
• decorous
• deferential
• dignified
• dutiful
• eucharistic
• formal
• formulary
• gallant
• grandiose
• hieratic
• honorific
• imposing
• impressive
• knightly
• majestic
• moving
• old-fashioned
• old-world
• paschal
• polite
• pompous
• proper
• punctilious
• regardful
• respectful
• ritual
• ritualistic
• sacerdotal
• sacramental
• seemly
• solemn
• starchy
• stately
• stiff
• striking
• stuffy
• well-mannered