澄 - lucidity, be clear, clear

to become clear (water, air, etc.); to become transparent

clear; serene

to be perfectly clear (water, air, etc.); to clear up

to clear; to make clear

perfectly clear and serene sky

clarified butter

to be perfectly clear

to look unconcerned; to assume a composed look

whirligig beetle (any insect of family Gyrinidae, esp. the Japanese whirligig beetle, Gyrinus japonicus)

to listen attentively

perfectly clear mirror

to affect a serene mood; to affect a serious demeanor; to act prudishly; to assume an air of superiority