As a Noun: 1. A person who behaves very correctly and is easily shocked by anything rude or improper. Often used showing disapproval. 2. A person who is easily shocked by things related to nudity or sex. English = prude. 3. A person who has a very strict and severe attitude towards questions of morality. English = puritan. As a Verb or Adjective: 1. To behave very correctly and to be easily shocked by anything rude or improper. Often used showing disapproval. English = (be) prim, (be) prim and proper, (be) prissy. 2. To be easily shocked by things related to nudity or sex. English = (be) prudish. 3. To have a very strict and severe attitude towards questions of morality. English = (be) puritanical. Idiomatic English = (be) straight-laced.