澄

to listen attentively

Word usually written using kana alone

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

pond skater; water strider

lucid; clear

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

perfectly clear and serene sky

clarifying agent; clarificant; clarifier; clearing agent; fining agent

perfectly clear mirror

perfectly clear mirror