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English definition of “unrealistic”

unrealistic

adjective     /ˌʌn.rɪəˈlɪs.tɪk/ US  /-riː.ə-/
B2 having a wrong idea of what is likely to happen or of what you can really do; not based on facts : I think these sales forecasts are unrealistic, considering how slow sales are at present . [+ to infinitive] It's unrealistic to expect an answer before next week .Useless and futileLogic and reason unrealistically     /-tɪ.kəl.i/ adverb Useless and futileLogic and reason
(Definition of unrealistic adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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