1. to cause someone to feel sudden shock or alarm; to surprise suddenly
Usage: third person singular present tense of ‘startle’

Examples

• The loud noise startles the sleeping cat.
• She startles easily when someone approaches from behind.
• The sudden movement in the bushes startles the hikers.
• His unexpected arrival startles everyone at the party.
• The car horn startles pedestrians crossing the street.
• The teacher’s voice startles students who were daydreaming.