airily
adverb
[ ˈɛːrɪli ]
• in a way that shows that one is not treating something as serious; casually.
• "he was airily dismissive of the question"
Similar:
lightly,
breezily,
flippantly,
casually,
nonchalantly,
readily,
heedlessly,
without consideration,
uncaringly,
indifferently,
unthinkingly,
light-heartedly,
gaily,
blithely,
jauntily,
cheerfully,