sabbatarian

from WordNet (r) 3.0 (2006)
Sabbatarian
    adj 1: pertaining to the Sabbath and its observance
    n 1: one who observes Saturday as the Sabbath (as in Judaism)
    
from The Collaborative International Dictionary of English v.0.48
Sabbatarian \Sab`ba*ta"ri*an\, a.
   Of or pertaining to the Sabbath, or the tenets of
   Sabbatarians.
   [1913 Webster]
    
from The Collaborative International Dictionary of English v.0.48
Sabbatarian \Sab`ba*ta"ri*an\, n. [L. Sabbatarius: cf. F.
   sabbataire. See {Sabbath}.]
   1. One who regards and keeps the seventh day of the week as
      holy, agreeably to the letter of the fourth commandment in
      the Decalogue.
      [1913 Webster]

   Note: There were Christians in the early church who held this
         opinion, and certain Christians, esp. the {Seventh-day
         Baptists}, hold it now.
         [1913 Webster]

   2. A strict observer of the Sabbath.
      [1913 Webster]
    
from Moby Thesaurus II by Grady Ward, 1.0
49 Moby Thesaurus words for "Sabbatarian":
      Albigensian, Catharist, Franciscan, High-Churchist, Trappist,
      Waldensian, abstainer, abstinent, anchorite, anchoritic, ascetic,
      austere, bhikshu, bigoted, creedbound, dervish, dogmatic, eremitic,
      evangelical, fakir, flagellant, formalist, formularist, formulist,
      fundamentalist, hermit, hidebound, hyperorthodox, literalist,
      literalistic, liturgist, mendicant, precisianist, precisianistic,
      purist, puristic, puritan, puritanical, rigoristic, ritualist,
      sacramentarian, sannyasi, self-denying, staunch, straitlaced,
      strict, wedded to poverty, yogi, yogin

    

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