"startling" in the verb sense
1. startle, galvanize, galvanise
to stimulate to action
"the loud noise startled him awake"
"galvanized into action"
2. startle, jump, start
move or jump suddenly, as if in surprise or alarm
"She startled when I walked into the room"
"startling" in the adjective sense
1. startling
so remarkably different or sudden as to cause momentary shock or alarm
"Sydney's startling new Opera House"
"startling news"
"startling earthquake shocks"
Source: WordNet® (An amazing lexical database of English)
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