Noun
Courage without sense or judgment; foolish rashness; recklessness.
Source: Webster's dictionaryIt is a disaster that wisdom forbids you to be satisfied with yourself and always sends you away dissatisfied and fearful, whereas stubbornness and foolhardiness fill their hosts with joy and assurance. Michel de Montaigne
Foolhardiness made the rat try to jump over the fireplace. African Proverb