Sami was very nonchalant.

Subsequently, she started screaming and breaking vases. I, in turn, nonchalantly left the apartment, and went to have tea with Mary.

He just nonchalantly goes about doing it.

Sami was so nonchalant about it.

Tom walked nonchalantly.

Despite her nonchalant air, she is paying close attention to everything you say.

Tom smiled nonchalantly and didn't say a thing.

His nonchalant glances at the priceless paintings were like spitting in the face of the artists.

Tom leaned nonchalantly against the wall.

I wonder what ground cinnamon tastes like," said the King nonchalantly and put the spoon in his mouth. "Hmm? ...Shit! Water... water... in the fridge. Oh crap, no water in the fridge!" The King went on running around the room frantically, looking desperately for water. Luckily, Duke Onkled happened to be pouring himself a glass of water. "Your Omnipotence, have water," he offered dutifully. "Gimme!" demanded the King, then emptied the glass in a split second. "Damn, that was awful."