noun
1. the trait of acting rashly and without prudence
• Syn: ↑heedlessness, ↑rashness
• Hypernyms: ↑imprudence
• Hyponyms: ↑lightheadedness
2. total lack of meaning or ideas
• Syn: ↑inanity, ↑senselessness, ↑vacuity, ↑pointlessness
• Derivationally related forms: ↑pointless (for: ↑pointlessness), ↑vacuous (for: ↑vacuity), ↑mindless, ↑inane (for: ↑inanity), ↑senseless (for: ↑senselessness)
• Hypernyms: ↑meaninglessness
Useful english dictionary. 2012.