The word for today is…
demure (adjective):
1: reserved, modest
2: affectedly modest, reserved, or serious : coy
Source : Merriam -Webster
Etymology : In the nearly seven centuries that demure has been in use, its meaning has only shifted slightly. While it began solely as a descriptive term for people of quiet modesty and sedate reserve—those who don’t draw attention to themselves, whether because of a shy nature or determined self-control—it came to be applied also to those whose modesty and reservation is more affectation than sincere expression. While demure sounds French and entered the language at a time when the native tongue of England was borrowing many French words from the Normans, the etymological evidence requires that we exercise restraint: the word’s origin remains obscure.
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