Meaning of ARCH(A)

WordNet Dictionary
	Definition:		[adj]  (of persons) highest in rank or authority or office; "his arch rival"; "the boss man"; "the chief executive"; "head librarian"; "top administrators" [adj]  expert in skulduggery; "an arch criminal"
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	Synonyms:		boss(a), chief(a), head(a), important, of import, skilled, top(a)