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

• slough of despond
• slough off
• sloughing
• sloughy
• Slovak
• Slovak Republic
• Slovakia
• Slovakian
• Slovakian monetary unit
• sloven
• Slovene
• Slovenia
• Slovenian
• Slovenija
• slovenliness
• slovenly
• slovenly person
• slovenly woman
• slow
• slow lane
• slow loris
• slow match
• slow motion
• slow time scale
• slow up