If you describe someone's actions as undignified, you mean they are foolish or embarrassing.
例句
It is sad to see a county confine its activities to undignified public bickering...看到整个县都不顾颜面地公开争吵,真让人感到难过。There followed an undignified slamming of doors...随后传来了很不像话的摔门声。
英汉词典释义
adj.
不庄严的;无尊严的;有损于尊严的
an undignified rush to be first冲去占最前位置的举动有损尊严He was reluctant to strike such an undignified pose before his girlfriend.他不愿意在女友面前摆出这种有失尊严的姿态。