puritan
noun
[ ˈpjʊərɪt(ə)n ]
• a member of a group of English Protestants of the late 16th and 17th centuries who regarded the Reformation of the Church under Elizabeth I as incomplete and sought to simplify and regulate forms of worship.
puritan
adjective
• relating to the Puritans.
• "a Puritan parliamentarian"
Origin:
late 16th century: from late Latin puritas ‘purity’ + -an.