Spooking is a term that refers to scaring or frightening someone or something. It could be used to describe a sudden appearance that causes someone to jump, or a loud noise that startles someone. There are many synonyms for the word spooking, including frightening, startling, unnerving, alarming, intimidating, and scaring. Other synonyms could include terrify, petrify, panic, or cause hysteria. These terms are often used interchangeably to describe situations where someone or something is made to feel anxious, nervous, or uncomfortable, and can be used to describe a wide variety of scenarios, from haunted houses to roller coasters to unexpected encounters.