1. Without variation or change, in every case
   "constantly kind and gracious"
   - invariably, always 
2. Without interruption
   "the world is constantly changing"
   - always, forever, perpetually, incessantly, unremittingly

See also: constant

• hemimetabolic
• hemimetabolism
• hemimetabolous
• hemimetaboly
• hemimetamorphic
• hemimetamorphosis
• hemimetamorphous
• hemimorphic
• hemimorphite
• hemin
• Heming
• Hemingway
• Hemingwayesque
• hemiparasite
• hemiparasitic
• hemiplegia
• hemiplegic
• hemipode
• Hemiprocnidae
• Hemiptera
• hemipteran
• hemipteron
• Hemipteronatus
• Hemipteronatus novacula
• hemipterous