irrational /ɪˈræʃənəl/ adjective Learner's definition of IRRATIONAL
[more irrational; most irrational]
: not rational无理性的: such as
a : not thinking clearly : not able to use reason or good judgment失去理智的 b : not based on reason, good judgment, or clear thinking不合理的；荒谬的 — irrationality
/ɪˌræʃəˈnæləti/ noun [noncount] — irrationally
/ɪˈræʃənəli/ adverb