WordWeb Online

1. Without variation or change, in every case
   "constantly kind and gracious";
   - invariably, always
    
2. Invariably
   "the world is constantly changing";
   - always, forever, perpetually, incessantly, unremittingly
    
3. In a faithful manner
   "it always came on, constantly, like the radio";
   - faithfully, dependably, reliably

Encyclopedia: Constantly