Definition: In a composed and unconcerned manner,casually
Etymology:The word comes from Old French where it was formed from the negative prefix "non + chalant"the present participle of the verb chaloir, “to be concerned". French formed a noun nonchalance from the adjective nonchalant that was borrowed into English by 1678; the adjective itself was borrowed later, as it is not attested for another half-century.
Sentence:"Does John intend to return with us? Johnna asked as nonchanlantly as she could
Gan Jiayi (7) 1-3