irrational
irrational adjective uk/ɪˈræʃənəl/ usIrrational feelings and actions are based on your emotions and not on good reasons.
нерациональный
irrational behaviour an irrational fear of flying irrational ity noun [ U ] uk/ɪˌræʃənˈæləti/ us
нерациональность
irrational ly adverb
нерационально