1. In a meaningless and purposeless manner
   "these innocent bystanders were senselessly killed" 
2. In an unreasonably senseless manner
   - mindlessly

See also: senseless

• haemorrhoidal vein
• haemorrhoidectomy
• haemosiderin
• haemosiderosis
• Haemosporidia
• haemosporidian
• haemostasia
• haemostasis
• haemostat
• haemostatic
• haemothorax
• Haemulidae
• Haemulon
• Haemulon album
• Haemulon aurolineatum
• Haemulon macrostomum
• Haemulon malanurum
• Haemulon parra
• hafiz
• hafnium
• haft
• Haftarah
• Haftorah
• hag
• Hagada