He is an expert in orthoepy, teaching pronunciation.

This room is covered with soundproofing material, so the sound doesn't leak outside.

He honked the car horn to get my attention.

The goods in this store are being sold for dirt cheap.

My four treasures of the study are a fountain pen, a pencil, an eraser, and a ruler.

He proceeded with the conversation in a refined and cultured manner.

He proceeded with the conversation in a refined manner.

On is always maintaining a calm attitude.

He is hiding a secret.

I like listening to music.