Part of speech:
An inclination or tendency of a specified kind:
(Intransitive) To move suddenly, or be excited, on feeling alarm; to start.
The definition of frighten is to cause fear or to make someone afraid or anxious.
To fill or overpower with terror; terrify.
(Military slang) An unidentified aircraft, especially as observed as a spot on a radar screen, and often suspected to be hostile. (Also sometimes used as a synonym for bandit - an enemy aircraft)
Part or all of this entry has been imported from the 1913 edition of Webster's Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
A supernatural being, such as a ghost
To strike with sudden fear; alarm.
(Archaic) A shadow
One who secretly collects information concerning the enemies of a government or group.
(Uncountable) Supernatural beings and events collectively. (When used with definite article: "the supernatural".)
(Philos.) A mental impression of a real person or thing
A nearby or adjoining region; vicinity:
The ghost of a dead person.
A place often visited
An agent is defined as someone or something that makes something happen.
A worker, esp. one skilled in industrial work
A person who secretly observes others to obtain information
The definition of a creep is the act of moving slowly or is slang for a scary or odd person who is unpleasant or repulsive.
A strange person, event, or thing.
someone unpleasantly strange or eccentric
To warn of approaching danger
An image without real existence; phantom; apparition
A person or thing reborn.
Find another word for spook. In this page you can discover 37 synonyms, antonyms, idiomatic expressions, and related words for spook, like: ghost, spirit, startle, frighten, goblin, phantom, terrorize, bogey, bogle, disembodied spirit and hobgoblin.