paranoid
UK: ˈpærənɔɪd | US: ˈpærənɔɪd
adj. exhibiting irrational distrust or suspicion of others
adj. relating to or characteristic of paranoia
n. a person suffering from paranoia
The word paranoid originates from the Greek paranoia (derangement, madness), combining para- (abnormal) and noia (mind). It entered English via French paranoïde in the early 19th century, initially describing delusional disorders. Over time, it broadened to describe excessive suspicion or irrational fear, reflecting its Greek roots in "abnormal thinking."
She became paranoid about her coworkers whispering behind her back.
His paranoid delusions made him isolate himself from friends.
The film portrays a paranoid protagonist who trusts no one.
Constant surveillance can create a paranoid society.
He dismissed her concerns as paranoid fantasies.