Insouciant

//ɪnˈsuːsɪənt// adj

Definitions

Adjective
  1. 1
    Casually unconcerned; carefree, indifferent, nonchalant.

    "an insouciant gesture"

Adjective
  1. 1
    marked by blithe unconcern wordnet

Etymology

From French insouciant, from in- (“not”, prefix) + souciant (“worrying”), 1828.

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