The smile that grew on Teabing's face was almost obscene

Taebing looked stunned. "She doesn't know?"

Langdon shook his head.

The smile that grew on Teabing's face was almost obscene. "Robert, you've brought me a virgin?"

obscene : 음란한, 음탕한, 음흉한

The smile that grew on Teabing's face was almost obscene.

-> Teabing의 얼굴에 피었던 웃음은 거의 음흉했다.