demureness

1. I know nothing, indeed, which so disfigures the countenance of a young person, or so impresses every feature with an air of demureness, if not altogether of sanctimoniousness and of age.
   我，说真的，不知道有什么会把一个年轻人的面孔伪装成这样，给面孔的每一部分都加上如此明显的做作神情，如果说不是加上满脸的伪善和世故的话。

noun

1. the affectation of being demure in a provocative way

   Synonym:    coyness

2. the trait of behaving with reserve and decorum