Synonym: neglect, negligence, nonperformance, sloppiness. Similar words: uselessness, selflessness, tactlessness, limitlessness, careless, carelessly, tireless, relentless. Meaning: ['kərləsnɪs /'keəl-] 
n. 1. the quality of not being careful or taking pains 2. failure to act with the prudence that a reasonable person would exercise under the same circumstances.
n. 1. the quality of not being careful or taking pains 2. failure to act with the prudence that a reasonable person would exercise under the same circumstances. 
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1. He will blame you for carelessness.
2. The accident was the inevitable consequence/result/outcome of carelessness.
3. The manager reproached the new salesgirl for her carelessness.
4. He failed to pass the examination through carelessness.
5. He kicked over the pail through carelessness.
6. He charged the fire to my carelessness.
7. He is a proverb for carelessness.
8. Teacher twitted me for about my carelessness.
9. I cannot tolerate your carelessness.
10. Carelessness in driving often results in disastrous accidents.
11. Your carelessness will tell against you in the examination.
12. His carelessness resulted in his failure in the exam.
13. He punished the children for their carelessness by making them pay for the damage.
14. Your errors stem all from your carelessness.
15. Your carelessness will overleap yourself!
16. You will suffer one day for your carelessness.
17. The vase was broken through carelessness.
18. She took her assistant to task for/over her carelessness.
19. He cut his own throat by carelessness.
20. The defence conceded stupid goals through sheer carelessness.
21. Your only fault is carelessness.
22. Alice's carelessness provoked her teacher to an outburst.
23. The error sprang from carelessness.
24. The error was due to carelessness pure and simple.
25. My teacher called me down for carelessness.
26. He ruined his prospects by carelessness.
27. The mistake grew out of her carelessness.
28. He was castigated for his carelessness in doing homework.
29. Lateness and carelessness are subjects for complaint.
30. You should make an apology to her for your carelessness.
More similar words: uselessness, selflessness, tactlessness, limitlessness, careless, carelessly, tireless, relentless, callousness, arduousness, useless, righteousness, consciousness, fastidiousness, meticulousness, capriciousness, timeless, nonetheless, baseless, homeless, hopeless, pretentiousness, ceaseless, guileless, tasteless, senseless, blameless, priceless, shapeless, hopelessly.