nonchalant
nonchalant
/ˈnɒnʃələnt/
behaving in a calm and relaxed way; giving the impression that you are not feeling worried
to appear/look/sound nonchalant
‘It'll be fine,’ she replied, with a nonchalant shrug.
Collocations
noun
Word Origin
mid 18th cent.: from French, literally ‘not being concerned’, from the verb nonchaloir.
e.g.