Everything that came back to the solar system was science, delivered in a smug and self-satisfied tone.

"No one can beat you," said Rhiannon, her tone smug.

"Ah, but there we have a problem," Bunlap said in a smug tone.

The satisfied, slightly smug tone in their voices was one Robert found understandable.

And no, the smug, self-congratulatory tone of the article does nothing to help.

That got Keogh's attention, because the smug, supercilious tone was gone.

The smug tone in the other man's voice infuriated him.

The smug so-happy-to-see-you tone had gone out of Andy's voice.

She was rather proud of herself and could not suppress the smug tone of voice.

"I can handle myself quite well," she answered in a creamily smug tone of voice.