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OTHER WORDS FROM thoughtlessthought·less·ly, adverbthought·less·ness, noun
How to use thoughtless in a sentence
That will bring further evidence of a departure from the dull old days of the 20th century, when a thoughtless football world saw Polynesian players and went ahead and pigeonholed them as linemen only.Clemson’s D.J. Uiagalelei continuing proud tradition of Polynesian quarterbacks|Chuck Culpepper|November 6, 2020|Washington Post
Unless said partner is ready to be whacked over their head with the box for their thoughtlessness, they have made a grave mistake.
When dealing with this kind of thoughtlessness it should be pointed out that fathers are not free from blame.Report of the Special Committee on Moral Delinquency in Children and Adolescents|Oswald Chettle Mazengarb et al.
From fool thoughtlessness I had not put on my overcoat, which was now far away in charge of the blue-bloused porter.Jaffery|William J. Locke
I fell to fingering these with the same impulse of thoughtlessness that induces people to bite their finger-nails.A Little Union Scout|Joel Chandler Harris
The old marquis, in his culpable thoughtlessness, had kindled this burning envy in the heart of his second son.File No. 113|Emile Gaboriau
With the thoughtlessness of youth Foster had never troubled his mind much about the piratical city of Algiers.The Middy and the Moors|R.M. Ballantyne