Here are some synonyms for "nonchantly":
* Casually
* Coolly
* Indifferently
* Unconcernedly
* With nonchalance
* With a shrug
* With a lack of interest
Here are some examples of how to use "nonchantly" in a sentence:
* "He nonchalantly strolled into the meeting, completely ignoring the tense atmosphere."
* "She nonchalantly flipped through the magazine, pretending not to notice the handsome man staring at her."
* "He nonchalantly tossed his keys onto the counter, not bothering to hang them up."
The word "nonchantly" implies a sense of calmness and indifference, often used to describe someone who is relaxed or doesn't care about what's going on around them.