The quality of state of being rash; inconsiderate or presumptuous haste; headstrong precipitation in decision or action; temerity; unwarranted boldness.(noun)
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Use "rashness" in a sentence
"Afforded no opportunity on that journey to kill Claudius, he discovers the unexpected, an occasion to make use of what he calls rashness:"
"My impatience was so great that, in spite of Gabriel's displeasure at what he called my rashness, I would not stay in London on the way, but we travelled straight down, reaching Fletcher's Hall at midnight."
"Your father was friendly to me and tried to persuade me against what he called rashness; but I always fancied he might have helped my mother, backed her up more, and I did not heed him."