1. At the scene of action
   "on-the-spot inspections"; "an on-the-spot reporter";
   - on-the-scene

1. Without delay or immediately
   "we hired her on the spot"; "thought they were going to shoot us down on the spot"
    
2. At the place in question; there
   "they were on the spot when it happened"; "it had to be decided by the man on the spot"
    
3. In a difficult situation
   "that question really put him on the spot"

See also: on-site

Encyclopedia: On-the-spot