startling

That startles or that excites sudden surprise, apprehension, fear, or like emotion; that rouses or suddenly and forcibly attracts attention: as, startling news; a startling discovery.

Easily startled or alarmed; skittish; shying.

verb

Present participle of startle.

adjective

Likely to startle; surprising; shocking.

adjective

so remarkably different or sudden as to cause momentary shock or alarm