► 動詞
曇る [(2)くもる] meaning: opaque rank: 1
☆ 眼鏡が汚れ・水蒸気で曇った ⇨ My glass lenses become opaque from dirt/steam
濁る [(2)にごる] meaning: opaque rank: 2
☆ 池の水は濁っている ⇨ The water of the pond is muddy
曇らせる [(4)くもらせる] meaning: opaque rank: 3
☆ 曇らせたガラス ⇨ Frosted glass
混濁 [こんだく] [混濁する] meaning: opaque rank: 4
☆ 患者の意識が混濁した ⇨ The consciousness of the patient became muddled. The patient started losing consciousness
► 名詞
濁り [にごり] meaning: opaque rank: 3
☆ 濁りの全く無い水 ⇨ Water with zero muddieness
► 形容動詞
不透明 [(2)ふとうめい] meaning: opaque rank: 3
☆ その慈善事業団体の経営には不透明な点が多い ⇨ There are many non transparent aspects in the management of that charity organization (☛ Often used figuratively. Note the antonym 透明 is NOT used figuratively)