Related Clues:

• Zombie base
• Quite strange
• Unpaired
• Missing a few marbles
• Kind of duck
• Like all primes but one
• Piña colada component
• Lacking a match
• Atypical
• Bar supply
• Quite unusual
• Unmatched, as socks
• Out of the ordinary
• "The --- Divorcee"
• West Indies beverage