口こう舌ぜつ

noun, noun which may take the genitive case particle 'no'

manner of speaking; way of talking; lip service

Refers to the style or manner of one's speech, often with a nuance of superficial or insincere talk. Can imply mere words without substance. Rare in modern conversation; mostly found in literary or formal contexts.

• 彼かれの口こう舌ぜつは巧たくみだが、誠せい意いが感かんじられない。

  His way of speaking is skillful, but I don't feel any sincerity.

• 口こう舌ぜつの徒とに過すぎない。

  He is nothing more than a smooth talker.