subtilty, n. rarity, fineness, ethereality; [refinement]; [artifice], [craft], [guile], [cunning].
subtle, a. [artful], [cunning], [sly], [designing], [crafty]; [refined], [discriminating].
subtlety, n. [cunning], artfulness, [guile], [craftiness]; [discernment], [penetration].
suburbs, n. pl. environs, purlieus, outskirts, [confines].
succeeding, a. subsequent, [following].
success, n. [prosperity], [triumph], [victory], good fortune.
successful, a. prosperous, [victorious], [triumphant], [fortunate].
succession, n. [sequence], consecution; [chain], [line], series.
successive, a. consecutive.
successor, n. Antonym: predecessor.