moodindicator
nounUK /ˈmuːd ˌɪndɪkeɪtə/
US /ˈmuːd ˌɪndɪkeɪtər/
A mood indicator is a thing that shows how someone is feeling.
The smiley face on her desk is a mood indicator that tells her friends she is happy today.
RELATED WORDS
OTHER MEANINGS
2. A small symbol or icon on a screen that shows a person's current feeling.
The chat app uses a little sun as a mood indicator when you feel cheerful.
3. A chart or tool that tracks how someone's feelings change over time.
His mood indicator showed more happy days this week than last week.
4. A color or light that tells others how a person is feeling without words.
The bracelet glows blue as a mood indicator when she feels calm.