unvarying

Adj.	1.	unvarying - persistent in occurrence and unvarying in nature; "maintained a constant temperature"; "a constant beat"; "principles of unvarying validity"; "a steady breeze" Synonyms: constant, invariant, steady, changeless
	2.	unvarying - lacking variety Synonyms: unvaried
	3.	unvarying - always the same; showing a single form or character in all occurrences; "a street of uniform tall white buildings" Synonyms: uniform

changeless, constant, invariable, invariant, steady