prissy
adjective disapproving uk/ˈprɪs.i/ us/ˈprɪs.i/
（行为和衣着）拘谨的;一丝不苟的;刻板的
caring too much about behaving and dressing in a way that is considered correct and that does not shock
My sister told me that my prissy attitude annoys her. 我姐姐告诉我，我拘谨的态度让她不悦。
Synonyms: priggish strait-laced