[1] : The Collaborative International Dictionary of English v.0.48

priestly \priest"ly\, a.
   of or pertaining to a priest or the priesthood; sacerdotal;
   befitting or becoming a priest; as, the priestly office; a
   priestly farewell. --shak.
   1913 webster

[2] : WordNet (r) 2.0

priestly
     adj 1: associated with the priesthood or priests; "priestly or
            sacerdotal vestments"; "hieratic gestures" syn: hieratic,
             hieratical, sacerdotal
     2: befitting or characteristic of a priest or the priesthood;
        "priestly dedication to the people of his parish" syn: priestlike
        ant: unpriestly
     also: priestliest, priestlier
see also:
hieratic hieratical sacerdotal priestlike unpriestly priestliest 
priestlier 

[3] : Moby Thesaurus II by Grady Ward, 1.0

23 moby thesaurus words for "priestly":
   abbatial, abbatical, archiepiscopal, canonical, capitular,
   capitulary, churchly, clerical, ecclesiastic, episcopal,
   episcopalian, evangelistic, hieratic, ministerial, missionary,
   pastoral, prelatial, prelatic, priest-ridden, priestish, rabbinic,
   sacerdotal, ultramontane

Priestly >> P Words
Priestly, definition of term: Priestly
priestly_pag1.html