Related Clues:

• All alternative
• Ultimatum word
• '___ Day Now' (1962 hit)
• Some
• '___ luck?'
• Not a picky specification
• Unspecified one
• '___ questions?'
• 'Take your choice'
• '___ takers?'
• Choice word
• Random one
• Even one
• See 23-Across
• All's partner