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English definition of “unreasonable”

unreasonable

adjective     /ʌnˈriː.zən.ə.bl̩/
B2 not fair or acceptable: unreasonable demands [+ to infinitive] It seems unreasonable to expect one person to do both jobs.Stupid and sillyOf unsound mind unreasonably     /-bli/ adverb
(Definition of unreasonable adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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