Synonyms and related words :
accordant, alike, automatic, balanced, calm, collected, composed, consistent, consonant, constant, continuous, cool, correspondent, dispassionate, easygoing, equal, equivalent, even, even-tempered, flat, homogeneous, immutable, imperturbable, invariable, level, level-headed, levelheaded, measured, mechanical, methodic, methodical, monolithic, of a piece, ordered, orderly, peaceful, persistent, placid, regular, reposeful, robotlike, same, serene, smooth, stabile, stable, steadfast, steady, systematic, tranquil, unbroken, unchangeable, unchanged, unchanging, undeviating, undifferentiated, undiversified, unflappable, uniform, unruffled, unvaried, unvarying