illogical
/ɪˈlɔdʒɪkl; ɪ`lɑdʒɪkl/ adj
1 without reason or logic; not sensible 没有道理的; 不合逻辑的; 悖於理的; 乖戾的
It seems illogical to change the timetable so often. 时间表变动得如此频繁, 似乎没有什麽道理.
2 contrary to the rules of logic 与逻辑相违的
an illogical conclusion 不合逻辑的结论.