inept
adj
(a) ~ (at sth/doing sth) completely unskilful (at sth) 不熟练的; 不擅长的
I´ve never heard anyone so inept at making speeches. 我从未听说过有这样不会讲话的人.
His inept handling of a minor problem turned it into a major crisis. 他处理不善使小事变大了.
(b) said or done at the wrong time; not appropriate or tactful 不合适的; 不恰当的; 不策略的
an inept remark 不当的言语.