Synonym: casual, cool, devil-may-care, easygoing, indifferent, lackadaisical, unconcerned. Similar words: trenchant, exhalation, balance, balanced, balance of, on balance, in charge, challenge. Meaning: ['nɑnʃəlɑnt /'nɒnʃələnt] 
adj. marked by blithe unconcern.
adj. marked by blithe unconcern. 
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1, 'It'll be fine,' she replied, with a nonchalant shrug.
2, Clark's mother is nonchalant about her role in her son's latest work.
3, He appeared nonchalant in court even when the judge ordered him to pay ￡1000.
4, It merely underlines our rather more nonchalant attitude to life.
5, Well, if he does, he's pretty nonchalant about it.
6, Hoomey stood up, trying to look nonchalant.
7, Perkins was nonchalant about being chosen.
8, A previously nonchalant world media took notice.
9, He looked nonchalant enough as he strolled along the Bayswater Road, but inwardly Creed was a mess of nerves.
10, Return with nonchalant air woman enjoying deliberately solitary lunch, but bark shin on chair.
11, Just around the block, swinging his arms with nonchalant vehemence.
12, Denis tried to look nonchalant and uninterested.
13, He immediately remarked with the most nonchalant air.
14, We are those two natural and nonchalant persons.
15, His nonchalant attitude nonchalance irritated me.
16, She was so nonchalant, so defiant.
17, HuHuman often at nonchalant time only will then understand.
18, Being a little nonchalant will probably attract more attention.
19, Be nonchalant about it all,(http://sentencedict.com/nonchalant.html) as if this is what every 12 week old pup does.
20, The year is nonchalant in you time, likes the air, cannot pay attention every day.
21, She defeat all her rival for the job with nonchalant ease.
22, 'Has he got a girlfriend?' Jill asked, trying to sound nonchalant.
23, She defeated all her rivals for the job with nonchalant ease.
24, He stood on one of the top milky branches of a sycamore, a nonchalant forty feet off the ground.
25, All her energies were devoted to appearing in the eyes of others as nonchalant.
26, The idea of staying in Oregon was beginning to appeal to her, but Roy was nonchalant about it.
27, "I'm sorry I'm so late. Have you been waiting long?" he asked. She gave a nonchalant shrug.
28, When Peter came in, she glanced up, trying to appear nonchalant.
29, Some Night Goblins become very proficient Squig hunters and come to be quite nonchalant about the dangers involved.
30, Ask any Chinese student about academic skullduggery and the response is startlingly nonchalant.
More similar words: trenchant, exhalation, balance, balanced, balance of, on balance, in charge, challenge, challenged, in charge of, plant, unchangeable, jubilant, merchant, half, hallway, salad, whale, punch, bench, bunch, ranch, in half, galaxy, palace, salary, behalf, halfway, shallow, launch.