悪戯[itazura] mischief
悪戯子[itazurakko] mischievous child
悪戯者[itazuramono] mischief-maker
悪戯小僧[itazurakozou] mischievous boy
悪戯盛り[itazurazakari] mischievous age

悪戯着[itazuragi] rompers
悪戯坊主[itazurabouzu] mischievous boy
悪巫山戯[warufuzake] prank
悪戯[waruitazura] offensive joke
演戯[engi] drama

カバー曲[kabaakyoku] remake of another artist's song (a "cover")
サイン曲線[sainkyokusen] sinusoid
愛唱曲[aishoukyoku] favourite song
委曲[ikyoku] details
一曲[ikkyoku] tune (melody, piece of music)

迂曲[ukyoku] meander
円曲[enkyoku] roundabout way (of speaking or working)
円錐曲線[ensuikyokusen] conic curve
円舞曲[enbukyoku] waltz (composition)
演曲[enkyoku] musical program