What does the word incautious mean?

Usage examples for incautious

  1. The primitive inhabitants of the valley of the Somme may have been too wary and sagacious to be often surprised and drowned by floods, which swept away many an incautious elephant or rhinoceros, horse and ox. – The Antiquity of Man by Charles Lyell
  2. I usually wander aimlessly about the streets till after midnight; to be sure one doesn't always see the brightest side of men, but if you wish to know them thoroughly- and they are so incautious! – The Children of the World by Paul Heyse