Related Clues:

• Eyebrow-raising
• Like a sock without a mate
• Like half of all integers
• OutrГ©
• Not matching
• A bit off
• Mysteriously unusual
• Like some animals
• Far from conventional
• Like all but one prime number
• Like most primes
• Unusual, as a vacation
• Sort of peculiar
• Pet store category
• "Hmm. . ."