来自 tact,老练，得体，-less,无，没有。

1. Throughout his school life Darius was tactless and egocentric.

上学期间，达赖厄斯粗鲁冒失，而且总以自我为中心。

2. Formal, exact and obstinate, he was also cold, suspicious, touchy and tactless.

严肃、严谨、倔强的他同时又冷漠、多疑、敏感、不会变通。

3. He had alienated many people with his tactless remarks.

他说话没个轻重，得罪了许多人。

4. It was tactless of you to comment on his hair!

你竟对他的头发说三道四，真是缺心眼！

5. His tactless words had incurred his father's deep displeasure.

他不得体的话语使他父亲感到十分不快.