Related Clues:

• Either gender joining a line, according to protocol
• A learner joins class that's methodical
• Ceremonial or stiffly polite
• Like state dinners
• A learner comes after class, according to convention
• Officially recognised
• Stiff — proper
• Proper stuff or malware component?
• Dressy
• Reserved 24 across for a leading lady
• Shape a student in accordance with convention
• Conventional type of wild flora around motorway
• Like a white-tie affair
• Stiff examination encapsulating misery primarily, fellow gets over it
• Serious little creature swallowing soldier at sea