precipitancy

precipitancy (countable and uncountable, plural precipitancies)

Suddenness; excessive haste.
- 1790, Adam Smith, The Theory of Moral Sentiments; […] In Two Volumes, 6th edition, volume II, London: […] A[ndrew] Strahan; and T[homas] Cadell […]; Edinburgh: W[illiam] Creech, and J. Bell & Co., →OCLC, part VII, section IV (Of the Manner in which Different Authors have Treated of the Practical Rules of Morality), page 386:
  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.

English