Noah Webster
Temerarious
TEMERA'RIOUS, adjective [Latin temerarius; from the root of time, tempest, which see. The sense is rushing or advancing forward.]
1. Rash; headstrong; unreasonably adventurous; despising danger; as temerarious folly.
2. Careless; heedless; done at random; as the temerarious dash of an unguided pen.
[This word is not much used.]