nonchalant
non|cha|lant /n'ɒnʃələnt, AM -l'ɑːnt/
[ADJ]
If you describe someone as nonchalant, you mean that they appear not to worry or care about things and that they seem very calm.
Clark's mother is nonchalant about her role in her son's latest work...
It merely underlines our rather more nonchalant attitude to life.
= casual
● nonchalance [N-UNCOUNT]
Affecting nonchalance, I handed her two hundred dollar bills.
● nonchalantly [ADV] usu ADV with v, also ADV adj
`Does Will intend to return with us?' Joanna asked as nonchalantly as she could.
= casually
[ADJ]
If you describe someone as nonchalant, you mean that they appear not to worry or care about things and that they seem very calm.
Clark's mother is nonchalant about her role in her son's latest work...
It merely underlines our rather more nonchalant attitude to life.
= casual
● nonchalance [N-UNCOUNT]
Affecting nonchalance, I handed her two hundred dollar bills.
● nonchalantly [ADV] usu ADV with v, also ADV adj
`Does Will intend to return with us?' Joanna asked as nonchalantly as she could.
= casually