inˈso͞osēənt,ˌaNso͞oˈsyäNt/
adjective
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showing a casual lack of concern; indifferent.“an insouciant shrug”
synonyms: nonchalant, untroubled, unworried, unruffled, unconcerned, indifferent,blasé, heedless, careless; More
A new word I’m keeping for future reference.
Masamune 