清澄|せいちょうseichou[0]heiban (flat)

1. na-adjective, nounclear; serene

• Synonym透明とうめいNeutralPhysical transparency: light passes through so what lies beyond is visible. 「清澄」 carries a fresh, pure beauty beyond mere physical clarity.
• Synonym澄み切ったすみきったWrittenWritten word for something perfectly clear, as in 「澄み切った空」. Very close in meaning to 「清澄」.
• SynonymクリアNeutralLoanword meaning clear or transparent; also used for clearing a bar or getting through something. 「清澄」 is more literary and speaks of clear water and air.
• Related純粋じゅんすいNeutralPure and unmixed, of substances, hearts and motives alike. 「清澄」 is said of clear water, air and sound.
• Related無垢むくWrittenLiterary word for spotless purity and innocence, said mainly of the heart, as in 「純真無垢」.
• Related鮮明せんめいNeutralVivid and distinct, used of images and impressions; it does not describe clear water or air.
• Related鮮やかあざやかNeutralVivid colors, or a brilliant, skillful performance; not used of clear water or air.
• Related明瞭めいりょうWrittenWritten word for plain and distinct, used of pronunciation and explanations.
• RelatedシャープNeutralLoanword for sharp or clear, said of images and a keen mind.
• RelatedクリーンNeutralLoanword for clean, also free of corruption, as in 「クリーンな政治」.
• RelatedピュアNeutralColloquial loanword for pure and innocent, said of a person's character.
• Related透徹したとうてつしたWrittenWritten word for lucid, penetrating understanding, as in 「透徹した論理」; describes thinking, not water or air.
• Related純一無雑じゅんいつむざつWrittenA literary four-character word for pure and unadulterated, said chiefly of a person's heart.
• Antonym濁りにごりNeutralAntonym meaning muddiness or murkiness, the opposite of the clarity of 「清澄」.
• Antonym混濁こんだくWrittenWritten antonym: turbid or muddy, also of muddled consciousness — the opposite of 「清澄」.

「清澄」 is a literary word for water, air or sound that is clear and serene, as in 「清澄な空気」「清澄な音色」. In everyday speech say 「澄んだ」 or 「澄み切った」 of water and air; 「濁り」 is the opposite, murkiness. 「クリア」「クリーン」「ピュア」 are loanwords, while 「鮮明」「明瞭」「シャープ」 describe clarity of images or thinking, not water or air.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 清きよらかで澄すんでいること。また、そのようなさま。