Scaring
Shake up and scaring are semantically related. in frighten someone topic. In some cases you can use "Shake up" instead a verb "Scaring".
Shake up
Shake up verb - To cause an unpleasant surprise for.
Cite this Source
Shake up and Scaring. (2016). Retrieved 2026, July 30, from https://thesaurus.plus/related/scaring/shake_up
Scaring & Shake up. N.p., 2016. Web. 30 Jul. 2026. <https://thesaurus.plus/related/scaring/shake_up>.
Shake up or Scaring. 2016. Accessed July 30, 2026. https://thesaurus.plus/related/scaring/shake_up.
Google Ngram Viewer shows how "scaring" and "shake up" have occurred on timeline