Puritan

adj. strict on religious and moral issues, supporting modesty and simplicity

n. one who is strict on religious issues; one who is strict on moral issues; one who supports modesty and simplicity

A Puritan of 16th and 17th century England was any person seeking "purity" of worship and doctrine, especially the parties that rejected the Reformation of the Church of England, and those who justified separation from the Church of England following the Elizabethan Religious Settlement are commonly called "Puritans" by historians and critics. However only some Puritans were in favor of separating from the English Church, which was currently under King James I. Most Puritans only wanted to change certain aspects of the church. Later groups are called "puritan", not necessarily favorably, by comparison to these low church Anglicans and Calvinistic Non-conformists.
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Noun
1. adheres to strict religious principles; opposed to sensual pleasures
(hypernym) abstainer, ascetic
2. a person excessively concerned about propriety and decorum
(synonym) prude
(hypernym) unpleasant person, disagreeable person
Adjective
1. morally rigorous and strict; "blue laws"; "the puritan work ethic"; "puritanic distaste for alcohol"; "she was anything but puritanical in her behavior"
(synonym) blue(a), puritanic, puritanical
(similar) nonindulgent

adj. puritan

(n.)
One who, in the time of Queen Elizabeth and the first two Stuarts, opposed traditional and formal usages, and advocated simpler forms of faith and worship than those established by law; -- originally, a term of reproach. The Puritans formed the bulk of the early population of New England.
  

(n.)
One who is scrupulous and strict in his religious life; -- often used reproachfully or in contempt; one who has overstrict notions.
  

(a.)
Of or pertaining to the Puritans; resembling, or characteristic of, the Puritans.