primly

adverb
1
in a careful and formal way, showing that you are easily shocked by anything that is rude
با رسمیت, از نظر اخلاقی تنگ‌نظرانه, به طور رسمی و محتاطانه
2
formally and neatly
موقرانه, مرتبانه, آراسته
a primly dressed young woman
synonym demurely