maidenly
[adjective]
Synonyms: modest, chaste, decent, decorous, demure, pure, virginal

[TahlilGaran] English Synonym Dictionary ▲

maid‧en‧ly /ˈmeɪdnli/ adjective literary old-fashioned
used to describe the behaviour of a girl or young woman who is shy about showing her body, talking about sex etc, especially in the past:
maidenly modesty

[TahlilGaran] Dictionary of Contemporary English ▲