careless

adjective
1

Not concerned or worried (about). .mw-parser-output .defdate{font-size:smaller}

2

Not giving sufficient attention or thought, especially concerning the avoidance of harm or mistakes.

"Jessica was so careless that she put her shorts on backwards."

3

Free from care; unworried, without anxiety.

"Jessica was careless about putting her shorts on properly."

Source: https://en.wiktionary.org/wiki/careless

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