1. Total lack of meaning or ideas
   - inanity, senselessness, vacuity, pointlessness 
2. The trait of acting rashly and without prudence
   - heedlessness, rashness

Derived forms: mindlessnesses

See also: mindless

Type of: imprudence, meaninglessness

• derailment
• Derain
• derange
• deranged
• derangement
• derate
• derby
• derby hat
• Derbyshire
• derecognise
• derecognize
• dereference
• deregulate
• deregulating
• deregulation
• derelict
• dereliction
• derequisition
• derestrict
• deride
• derision
• derisive
• derisively
• derisorily
• derisory