Related Clues:

• Ceremonial, solemn
• Conforming to accepted customs, say dress
• Stiffly formal and proper
• Ceremonious or official
• Conforming to accepted customs
• Stately or official
• Not a casual pound for 20 down
• Not a casual quid for Mother
• It's not so casual for Mother to get to the half-century
• No casual pound for a parent
• Perhaps make a half-century in no casual way
• Sounds a little hoarse about Mister up there, but not casually so
• To benefit Mother, there's nothing casual to a half-century
• Nothing casual for her before fifty
• Stiffly correct