澄

to clear, to make clear

to be unruffled, to look unconcerned, to feign indifference

to look demure, to look prim, to put on airs

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

to resonate clearly (e.g. voice)

to become serene, to become tranquil, to be free of worries

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

clear, serene

to listen carefully, to strain one's ears