prudish

adj

1. Of excessive propriety; easily offended or shocked, especially by sexual matters.

   “Near-synonyms: prim, priggish, prissy; straight-laced; puritanical”

   “Young people who are close to writing off the Democratic Party as a dinosaur, as a gerontocracy of prudish abuelos who gave birth by immaculate conception, may be in for a pleasant surprise.”