unmotivated 

英汉解释

adj. 动机不明的

反义词

a.   motivated

参考例句

1. Unmotivated sleep, and terrible is nothing we can do.
无心睡眠，可怕的是我们无能为力。
2. Max: What any irresponsible, unmotivated, drop-out would do. Go to New York, like tonight.
马克斯：像我这种不负责任、没有目标、中途辍学人能做，去纽约，就像今晚。
3. Some students are unmotivated just because they may not be able to endure the way they are taught.
有的学生的学习动机未被激发，就是因为他们难以忍受教师的授课方式。

英英解释

adj.
  1. without motivation

网络释义

unmotivated
动机不明的; 无合理动机;
unmotivated love
无心之爱;
unmotivated award
无根据的裁决;
The law of school incidents caused by unmotivated students
未成年学生校园伤害事故若干法律问题研究;