prudish
/ˈpruːdɪʃ/Definitions
1. adjective
having or showing a strict moral code, especially one that is considered old-fashioned or puritanical, and a reluctance to discuss or engage in activities considered improper or immoral
“Her prudish attitude made it difficult for her to connect with her more laid-back colleagues.”
2. noun
a person with a prudish attitude
“The prudish grandmother was shocked by the movie’s content.”