いんしつ 陰湿 LinksSentence search for 陰湿Sentence search for いんしつKanji details for 陰 and 湿Edit in JMdict Na-adjective (keiyodoshi), Noun1. malicious; spiteful; vicious; wicked; devious; underhanded; slyちゅうがく中学・こうこう高校ではいんしつ陰湿ないじめがふ増えるけいこう傾向にあるという。In junior high and high schools, they say insidious forms of bullying are on the rise.Na-adjective (keiyodoshi), Noun2. shady and damp Discussions Log in to talk about this word.