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

• annoyance
• annoyed
• annoyer
• annoying
• annoyingly
• annual
• annual fern
• annual general meeting
• annual parallax
• annual ring
• annual salt-marsh aster
• annualise
• annualize
• annually
• annualry
• annuitant
• annuity
• annuity in advance
• annul
• annular
• annular eclipse
• annular scotoma
• annulate
• annulated
• annulet