Etymology
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impetuosity (n.)

early 15c., "violent movement, rushing," from Old French impetuosité (13c.) and directly from Medieval Latin impetuositatem (nominative impetuositas), from Late Latin impetuosus "impetuous, violent" (see impetuous).

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Definitions of impetuosity

impetuosity (n.)
rash impulsiveness;
Synonyms: impetuousness
From wordnet.princeton.edu