puritan

[1]	moralist , pietist , religionist , fanatic , zealot , purist
[2]	prude

adj.

[1]	prudish , puritanical , prim , proper , strait-laced , ascetic , austere , moralistic , pietistic , intolerant , disapproving , bigoted , narrow-minded , stuffy , stiff-necked , rigid , uncompromising , hard-line , stern , severe , strict , (Colloq) uptight , hard-nosed