/ ˈriːznəbl; NAmE / adjective
1.
reasonable (to do sth) fair, practical and sensible :
It is reasonable to assume that he knew beforehand that this would happen.
Be reasonable! We can't work late every night.
Any reasonable person would have done exactly as you did.
The prosecution has to prove beyond reasonable doubt that he is guilty of murder.
OPP unreasonable
2.
acceptable and appropriate in a particular situation :
He made us a reasonable offer for the car.
You must submit your claim within a reasonable time.
3.
( of prices ) not too expensive
SYN fair :
We sell good quality food at reasonable prices.
➡ note at cheap
4.
[ usually before noun ] fairly good, but not very good
SYN average :
a reasonable standard of living
The hotel was reasonable, I suppose (= but not excellent) .
► rea·son·able·ness noun [ U ]
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WORD ORIGIN
Middle English : from Old French raisonable , suggested by Latin rationabilis rational, from ratio , from the verb reri consider.