Imprudence /(?)/
Im·pru·dence
Imprudence
n.
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The quality or state of being imprudent; want to caution, circumspection, or a due regard to consequences; indiscretion; inconsideration; rashness; also, an imprudent act; as, he was guilty of an imprudence.
His serenity was interrupted, perhaps, by his own imprudence.