reasonable

UK: /ˈriːz^ənəb^əl/

US: /ˈrizənəbəl, ˈriznə-/

US: (rē′zə nə bəl, rēz′nə-)

WordReference Random House Learner's Dictionary of American English © 2025

rea•son•a•ble /ˈrizənəbəl, ˈriznə-/   adj. 

1. agreeable to or in agreement with reason;
   logical:
   a reasonable conclusion from the facts.
2. not exceeding the limits of reason;
   not too high or too much;
   fair:
   a reasonable price for the new car.
3. capable of rational behavior, decision, etc.

rea•son•a•ble•ness, n. [uncountable]

WordReference Random House Unabridged Dictionary of American English © 2025

rea•son•a•ble  (rē′zə nə bəl, rēz′nə-), adj. 

1. agreeable to reason or sound judgment;
   logical:
   a reasonable choice for chairman.
2. not exceeding the limit prescribed by reason;
   not excessive:
   reasonable terms.
3. moderate, esp. in price;
   not expensive:
   The coat was reasonable but not cheap.
4. endowed with reason.
5. capable of rational behavior, decision, etc.

• Latin ratiōnābilis. See reason, -able
• Middle French raisonnable
• Middle English resonable 1250–1300

rea′son•a•ble•ness, rea′son•a•bil′i•ty, n. 
rea′son•a•bly, adv. 
Synonyms

• 1. intelligent, judicious, wise, equitable.
  Reasonable, rational refer to the faculty of reasoning.
  Rational can refer to the reasoning faculty itself or to something derived from that faculty:
  rational powers; a rational analysis.
  It can also mean sane or sensible:
  She was no longer rational; a rational plan.
  Reasonable most often means sensible:
  A reasonable supposition is one which appeals to our common sense.
• 2. equitable, fair, just. See moderate. 

Collins Concise English Dictionary © HarperCollins Publishers::

reasonable / ˈriːzənəb^əl/ adjective

1. showing reason or sound judgment
2. having the ability to reason
3. having modest or moderate expectations; not making unfair demands
4. moderate in price; not expensive
5. fair; average

ˈreasonably adverb

ˈreasonableness noun