1. 不善于社交的：unsrupulous 肆无忌惮的 | unsociable 不善于社交的 | untimely 不和适宜的

2. 不好社交的：78. unimaginative缺乏想象力的 | 79. unsociable不好社交的 | 80. deprive somebody of one's imagination and creativity使...丧失了想象力和创造力

3. 变得不善交际：与外界隔离 be isolated from the outside world | 变得不善交际 unsociable | 近视眼 near-sighted

4. 不擅社交的：被动的passive | 不擅社交的unsociable | 保守的conservative

1. 不善交际的；不合群的
Someone who is unsociable does not like talking to other people and tries to avoid meeting them.

e.g. My marriage has broken up. It has made me reclusive and unsociable...
我的婚姻破裂了。这让我变得孤僻、不愿与人来往。
e.g. I am by no means an unsociable person.
我绝对不是一个不合群的人。

adj

1. not inclined to society or companionship

e.g. an unsociable nature...shy and reserved
generally unsociable except with intimate friends
unsociable behavior
an unsociable neighborhood