Definition of "precipitancy"

Though this involuntary falſehood may frequently be no mark of any want of veracity, of any want of the moſt perfect love of truth, it is always in ſome degree a mark of want of judgment, of want of memory, of improper credulity, of ſome degree of precipitancy and raſhneſs.

1790, Adam Smith, The Theory of Moral Sentiments; Creech, and J. Bell & Co., part VII, section IV (Of the Manner in which Different Authors have Treated of the Practical Rules of Morality), page 386