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early 15c., "quality of rashness or heedlessness; imprudent act," from Latin imprudentia "lack of foresight, inconsiderateness, ignorance, inadvertence," noun of quality from imprudens (see imprudent).
late 14c., from Latin imprudentem (nominative imprudens) "not foreseeing, unaware, inconsiderate, heedless," from assimilated form of in- "not, opposite of" (see in- (1)) + prudens, contraction of providens, present participle of providere "to provide," literally "to see before (one)" (see provide). Related: Imprudently.