Synonyms of reasonable

reasonable

adjective

ˈrēz-nə-bəl 

1

as in logical

according to the rules of logic

his answer is perfectly reasonable

Synonyms & Similar Words

• logical
• rational
• valid
• coherent
• good
• sensible
• analytic
• justifiable
• sound
• empirical
• consequent
• well-grounded
• well-founded
• cognitive
• a priori
• defensible
• sustainable
• tenable
• supportable
• syllogistic
• defendable
• a posteriori
• maintainable

Antonyms & Near Antonyms

• unreasonable
• irrational
• weak
• illogical
• misleading
• invalid
• illegitimate
• incoherent
• inconsequential
• unsound
• specious
• fallacious
• sophistic
• absurd
• casuistic
• insane
• stupid
• unscientific
• inconsequent
• unarticulated
• mad
• crazy
• preposterous
• nonsensical
• fatuous
• eristic
• nutty
• loony
• thoughtless
• simpleminded
• senseless
• harebrained
• witless
• daffy
• unconvincing
• cockeyed
• weak-minded
• half-baked
• half-witted
• uncompelling

2

as in reasoned

based on sound reasoning or information

those playing rules sound reasonable to me

Synonyms & Similar Words

• logical
• reasoned
• good
• sensible
• valid
• rational
• justified
• hard
• solid
• true
• plausible
• informed
• commonsense
• well-founded
• sober
• firm
• commonsensical
• just
• credible
• real
• levelheaded
• commonsensible
• actual
• validated
• convincing
• certain
• sure
• substantiated
• confirmed
• cogent
• certified
• verified
• colorable
• corroborated

Antonyms & Near Antonyms

• unreasonable
• irrational
• illogical
• unjustified
• unfounded
• invalid
• uninformed
• nonsensical
• unsound
• groundless
• unwarranted
• nonrational
• unsupported
• unsubstantiated
• weak
• implausible
• unreasoned
• flimsy
• unconvincing
• nonvalid
• false
• misguided
• fallacious
• misled

3

as in cheap

costing little

desperately trying to find reasonable hotel rates for the holiday weekend

Synonyms & Similar Words

• cheap
• affordable
• inexpensive
• low
• popular
• budget
• low-end
• dirt cheap
• chintzy
• cheapie
• moderate
• reduced
• discounted
• cheapo
• discount
• cut-rate
• bargain-basement
• lowered
• cut-price
• worthless
• dime-store
• el cheapo
• wholesale
• cheapish
• valueless
• fire-sale
• supercheap
• ultracheap

Antonyms & Near Antonyms

• valuable
• high
• expensive
• costly
• dear
• precious
• pricey
• premium
• unreasonable
• deluxe
• inflated
• increased
• prohibitive
• exorbitant
• steep
• extravagant
• spendy
• high-ticket
• stiff
• invaluable
• priceless
• luxurious
• overpriced
• prohibitory
• superexpensive
• ultraexpensive

4

as in rational

having the ability to reason

some people once believed that women were not by nature reasonable beings, but generations of female scholars have proved those people wrong

Synonyms & Similar Words

• rational
• intelligent
• reasoning
• thinking
• logical
• mental
• practical
• analytic
• sensible
• intellectual
• sane
• cognitive
• cerebral
• highbrow
• highbrowed
• brainy
• levelheaded
• cognitional
• sober

Antonyms & Near Antonyms

• unreasonable
• irrational
• unthinking
• slow
• unintelligent
• unreasoning
• nonrational
• stupid
• dumb
• dense
• dull
• fatuous
• obtuse
• senseless
• mindless
• dopey
• illogical
• brainless
• dorky
• nonthinking
• invalid
• nonsensical
• fallacious
• groundless
• doltish
• thickheaded
• half-witted

Example Sentences

Recent Examples of reasonable

Prosecutors determined there was not a reasonable likelihood of conviction on any criminal charge. — Ruby Grisin, Louisville Courier Journal, 8 Aug. 2026

This gives time for reasonable concerns to be raised and for pivots in design and siting to take place accordingly. — Jessica Gelt, Los Angeles Times, 7 Aug. 2026

College athletics are evolving rapidly, and reasonable people can disagree about the best path forward. — Chicago Tribune, 7 Aug. 2026

Signage, register prompts, receipts and employee explanations all shape whether customers view rounding as a reasonable adjustment or another example of being nickel-and-dimed. — Brian Delp, Forbes.com, 7 Aug. 2026