Type of emotion : Sad

Sad is an emotion characterized by feelings of disadvantage, loss, and helplessness. When sad, people often become quiet, less energetic, and withdrawn. (Wikipedia)


In facial expression sad emotion shown by characteristic like :
1. The inner eyebrows are bent upward.
2. The eyes are slightly closed.
3. The mouth is relaxed.
The following are some expressions that indicate a person in a state of sad :
1. When I failed an exam.
2. When I was told that my friend's wife had cancer.
3. When I heard that our cat had died.
etc.
what about you? what conditions make you feel sad?
please write down your feelings via comments below.