WordWeb Online

1. Be contingent on
   "Your grade will depend upon your homework";
   - depend on, devolve on, ride, turn on, hinge on, hinge upon
    
2. Put trust in with confidence
   "she is someone you can really depend upon when times get rough";
   - depend on, rely on, rely upon, swear by

Derived forms: depended upon, depending upon, depends upon