Related Clues:

• Like Felix and Oscar
• Not even
• Off the wall
• Uncanny
• Out there, a bit
• Like 1 or 7
• 'That's ___ ...'
• Freakish
• Quite strange
• Unpaired
• Missing a few marbles
• Kind of duck
• Like all primes but one
• Lacking a match
• Atypical