1. startle, galvanize, galvanise, shock, floor, ball over, blow out of the water, take aback
usage: to stimulate to action ; "..startled him awake"; "galvanized into action"
2. startle, jump, start, move
usage: move or jump suddenly, as if in surprise or alarm; "She startled when I walked into the room"
1. startled, surprised (vs. unsurprised)
usage: excited by sudden surprise or alarm and making a quick involuntary movement; "students startled by the teacher's quiet return"; "the sudden fluttering of the startled pigeons"; "her startled expression"