Related Clues:

• Stiffly formal
• No-nonsense
• Overly prim and proper
• Priggish
• Give a shot, perhaps
• Make calm
• Affectedly refined
• Fastidious to a fault
• Of sedate character
• Proper and then some
• Tame
• Prim and reserved
• Proper to a fault
• Puritanical
• Playfully shy