In an over-hasty manner; with too much haste. (unknown)
The Century Dictionary (Public Domain)
Use "overhastily" in a sentence
"I do think, however, that you are dismissing Tim Kaine rather overhastily."
"Therefore if the notions themselves (which is the root of the matter) are confused and overhastily abstracted from the facts, there can be no firmness in the superstructure."
"Now if the very notions of the mind (which are as the soul of words and the basis of the whole structure) be improperly and overhastily abstracted from facts, vague, not sufficiently definite, faulty — in short, in many ways, the whole edifice tumbles."