He sounded chillingly polite; the little flame of hope that he had decided to like her after all died.

Judy suspected he sounded polite rather than sincere.

I tried to sound happy and polite.

"Mmm," he said vaguely, trying to sound polite but disinterested.

As they explain: it sounds more polite.

I was careful to sound polite and helpful.

Data sounded so regretfully polite that Picard had a hard time believing the android didn't truly feel bad.

She tried to sound calm and polite and succeeded in being frigidly wooden.

"No, sir, I sure won't," she promised, but it sounded more polite than sincere.

The request sounded impeccably polite, but tinged with dry sarcasm.