Word of the...week or whatever
What's precipitancy?
(prē sip'i tən sē, pri-)
Great haste, rashness, or hasty action.
"I hope there will be no women besides our own party," Lady Bareacres said, after reflecting upon the invitation which had been made, and accepted with too much precipitancy.
From William Makepeace Thackeray's Vanity Fair