Related Clues:

• Not open
• Far from a drama queen
• Not quite enough
• Averse to first moves, e.g.
• Like many a wallflower
• Not outgoing
• Far from bold
• "Don't be ___!"
• Like wallflowers
• Sudden start
• Not camera-ready?
• ''Billy, Don't Be ___'' (1974 hit)
• Indebted to the pot, in poker lingo
• Unlikely to break the ice
• Lacking self-confidence