Synonyms: heedlessness, mindlessness, rashness
Definition: the trait of acting rashly and without prudence
Similar words: imprudence
Definition: a lack of caution in practical affairs
Synonyms: inanity, mindlessness, vacuity, senselessness, pointlessness
Definition: total lack of meaning or ideas
Similar words: meaninglessness
Definition: the quality of having no value or significance
Usage: he resented the meaninglessness of the tasks they assigned him