1. Characterized by or fit for fertilization by a flower that is not closely related
   - exogamous 
2. Pertaining to or characterized by the custom of marrying only outside the limits of a clan or tribe
   - exogamous

See also: exogamy, outbred

• unperceptiveness
• unperformed
• unpermed
• unpermissive
• unpermissiveness
• unperplexed
• unperson
• unpersuadable
• unpersuaded
• unpersuasive
• unpersuasiveness
• unperturbed
• unpick
• unpictured
• unpicturesque
• unpierced
• unpigmented
• unpillared
• unpin
• unpitying
• unplaced
• unplanned
• unplanted
• unplastered
• unplayable