frighten

verb2

1. •
   To cause to feel fear; to scare; to cause to feel alarm or fright.

   • Avery puts a sheet over her head, pretending to be a ghost to frighten Emily.
2. •
   To become scared or alarmed.

   • In fitting the White Leghorns for exhibition, it must be remembered that they are of nervous disposition and frighten easily. — 1898