1. Not based on reason
   "there is a great deal that is nonrational in modern culture" 
2. Obtained through intuition rather than from reasoning or observation
   - intuitive, visceral

See also: illogical, irrational, unlogical

• Urginea
• Urginea maritima
• urging
• Uria
• Uria aalge
• Uria lomvia
• Uriah
• urial
• uric
• uric acid
• uricaciduria
• uricosuric
• uridine
• Urim and Thummim
• urinal
• urinalysis
• urinary
• urinary apparatus
• urinary bladder
• urinary calculus
• urinary hesitancy
• urinary incontinence
• urinary organ
• urinary retention
• urinary system