Related Clues:

• Like 1, 11, 111, and 1,111
• Like an unpaired sock
• Abnormal
• Hard to explain
• See 127 Across
• Not ordinary
• Queer
• Like some bedfellows
• Like 1 or 11
• Occasional, as a job
• ''The ___ Couple''
• Out of the norm
• Different from what's expected
• Like Simon's ''Couple''
• Spooky, maybe