Webster’s Revised Unabridged Dictionary · 1913
Rashness
Rash′ness, n. The quality or state of being rash.
We offend . . . by rashness, which is an affirming or denying, before we have sufficiently informed ourselves. South.
Syn. — Temerity; foolhardiness; precipitancy; precipitation; hastiness; indiscretion; heedlessness; inconsideration; carelessness. See Temerity.