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детализировать

detalizirovatʹ

(to affect nicety or subtlety in thought or language)

облагораживать

oblagoraživatʹ

(to purify from what is gross, coarse, vulgar, inelegant, low, and the like; to make elegant or excellent; to polish)

очищать

očiščatʹ

(to reduce to a fine, unmixed, or pure state; to free from impurities; to free from dross or alloy)

соверше́нствоваться

soveršénstvovatʹsja

(to improve in accuracy, delicacy, or excellence)

уточнять

utočnjatʹ

(to affect nicety or subtlety in thought or language)