adjective
demure
dih-MYOOR/dɪˈmjʊr/
Modest and reserved in manner or appearance.
She responds to the greeting with a demure smile and lowered eyes.

Etymology
Demure first described someone calm, sober, or serious, before coming to emphasize reserved or shy behavior. Its proposed connection with Old French meur, “mature” or “discreet,” is not certain.
In context
a demure pretty little thing of sixteen or seventeen years, dressed in a prim strait dress and an old fashioned Puritan cap.
More examples
- The dress has a demure neckline and simple sleeves.
- His quiet manner is unusually demure at the formal dinner.
- The character's demure appearance hides a bold personality.
Forms
demure · more demure · most demure