Unjustified mistrust of others (8)

I believe the answer is:

paranoia

(Other definitions for paranoia that I've seen before include "Insane suspiciousness" , "Mental disorder characterised by delusions of persecution" , "Disorder characterized by delusions of persecution" , "State of mind involving delusions of persecution" , "Delusion of being persecuted" .)

I've seen this clue in The Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.