Definition of careless
- careless days
- My brother was too careless of his charge.
He is a careless worker.
She was careless with my things.
It was a careless mistake.
a newspaper known for careless reporting
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'careless.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
: not using care : not careful
: done, made, or said without enough thought or attention
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