来自拉丁语pendere,悬挂，称量，词源同pendulum,dependent,pound.-s,表反复。即反复称量的，反复衡量的，引申词义哀伤的，忧戚的。词义演变比较deliberate.

1. He looked suddenly sombre, pensive.

他突然看起来很阴郁，一副忧虑的样子。

2. You may remember the way each scene ended with someone looking pensive or significant.

你或许还记得，每一场的结尾要么是某人作沉思状，要么是某人故作深沉。

3. He became so pensive that she didn't like to break into his thought.

他陷入沉思之中,她不想打断他的思路.

4. What are you so pensive about?

你这么专心,在想些 什么 ?

5. She had a gentle voice and pensive expression.

她有柔和的声音和深思的表情.