He seemed unconcerned about the tests, she thought, based on his nonchalant tone.

Then, as an afterthought, he strolled with them to the elevator, talking to Curwood in a nonchalant tone.

"Very well," decided Thurney, in a nonchalant tone.

Despite the nonchalant tone, there was an edge of concern in his voice.

She continued in a nonchalant tone, as if nothing had happened.

"Another one of those nut phone calls," remarked Mullrick, in a nonchalant tone.

Hmm, makes sense, though," Kris said in her most nonchalant tone.

"Well," said the old lady, in a nonchalant, matter-of-fact tone.

In my smoothest, most nonchalant tone, he told me, "I must finish dressing.