Definition of Startling

Adjective: startling staa(r)t-ling or staa(r)-tu-ling

So remarkably different or sudden as to cause momentary shock or alarm
"Sydney's startling new Opera House"; "startling news"; "startling earthquake shocks"

Verb: startle staa(r)-t(u)l

To stimulate to action
"..startled him awake";
- galvanize, galvanise [Brit]
Move suddenly, as if in surprise or alarm
"She startled when I walked into the room";
- jump, start