1. Not exhibiting or characterized by careful thought
   - unreflective, unthinking

See also: thoughtless, unthoughtfulness

• diol
• Diomedea exulans
• Diomedea nigripes
• Diomedeidae
• Dionaea
• Dionaea muscipula
• Dionysia
• Dionysiac
• Dionysian
• Dionysius
• Dionysius the Elder
• Dionysus
• dioon
• Diophantus
• diopside
• diopter
• dioptre
• dioptric
• dioptrics
• Dior
• diorama
• diorite
• Dioscorea
• Dioscorea alata
• Dioscorea batata