prudery
From Longman Dictionary of Contemporary Englishpruderyprud‧er‧y /ˈpruːdəri/ noun [uncountable] OFFENDthe behaviour or attitude of people who are too easily shocked by things relating to sex – used to show disapprovalExamples from the Corpusprudery• Surely, they feel, youthful vigour should outgun out-of-date prudery.• A single incident suggests a great deal about Hennepinhis prudery, his belligerence, his sensitivity.• I am convinced that Victorian prudery was much to blame for this, and modern treatment might have much ameliorated it.