Definition of Reason

Noun

• a fact that logically justifies some premise or conclusion
  "there is reason to believe he is lying"
  
• a justification for something existing or happening
  "he had no cause to complain"
  "they had good reason to rejoice"
  cause grounds
• the state of having good sense and sound judgment
  "his rationality may have been impaired"
  "he had to rely less on reason than on rousing their emotions"
  rationality reasonableness
• the capacity for rational thought or inference or discrimination
  "we are told that man is endowed with reason and capable of distinguishing good from evil"
  understanding intellect
• an explanation of the cause of some phenomenon
  "the reason a steady state was never reached was that the back pressure built up too slowly"
  
• a rational motive for a belief or action
  "the reason that war was declared"
  "the grounds for their declaration"
  ground

Verb

• think logically
  "The children must learn to reason"
  
• present reasons and arguments
  argue
• decide by reasoning
  draw or come to a conclusion
  "We reasoned that it was cheaper to rent than to buy a house"
  - reason out conclude

• Scrabble® score of the reason (6)
• Word Chums® score of the reason (7)
• Words With Friends® score of the reason (7)