frightens

/F R AY1 T AH0 N Z/
verb
  1. 1

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

    โ€œAvery puts a sheet over her head, pretending to be a ghost to frighten Emily.โ€

Source: https://en.wiktionary.org/wiki/frighten, https://en.wiktionary.org/wiki/frightens