nonchalantly
adverb/ˈnɒnʃələntli/
/ˌnɑːnʃəˈlɑːntli/
- in a calm and relaxed way, showing no sign of worry synonym casually (1)
- He was leaning nonchalantly against the wall.
- ‘I already know,’ she replied nonchalantly.
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nonchalantly