thoughtlessness

• Thus the power of thoughtlessness, the power people had to forget what time was always doing. —  THE YEARS OF RICE AND SALT - Kim Stanley Robinson
• But when you ascribe this to my negligence, thoughtlessness, and indolence, I can only regret your having such an opinion of me, and from my heart grieve that you so little know your son. —  The Letters of Wolfgang Amadeus Mozart, Vol.1.
• It's not his thoughtlessness, that is, his failure to pay taxes on the car and driver, that's the problem, it's his corruption, his profiteering at the very heart of what makes Washington such a loathsome place. —  The Reaction
• Abetted by their thoughtlessness, the amusement park's management didn't set limits on how high they could go or even provide safety equipment. —  The McKinsey Quarterly
• He had begun life again with his young children; he could thoroughly sympathise alike with their thoughts and with their thoughtlessness, and by training them in a manner at once wise and firm, he had been spared the greater part of that anxiety and disappointment which generally spring from our own mismanagement. —  St. Winifred's, or The World of School

Roget's II: The New Thesaurus

Allen's Synonyms and Antonyms

Used in the Same Context