'Startling' definitions:

Definition of 'startling'

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

Definition of 'Startling'

From: GCIDE
  • Startle \Star"tle\ (st[aum]r"t'l), v. i. [imp. & p. p. Startled (st[aum]r"t'ld); p. pr. & vb. n. Startling (st[aum]r"tl[i^]ng).] [Freq. of start.] To move suddenly, or be excited, on feeling alarm; to start. [1913 Webster]
  • Why shrinks the soul Back on herself, and startles at destruction? --Addison. [1913 Webster]