Emotion (noun)

1. A natural instinctive state of mind deriving from one's circumstances, mood, or relationships with others.
2. A feeling that ranges from mild to intense and that is often accompanied by physiological changes.

Origin:

From the latin word "emotionem" meaning "a stirring up, agitation".

Examples:

1. He felt a range of emotions as he watched the sunset.
2. She struggled to control her emotions.
3. The movie evoked strong emotions in the audience.
4. His emotions got the better of him and he cried.
5. Emotions play a critical role in our decision making process.