Paranoia
Definition 1 of 2
Pro Tip 1/3
Excessive Suspicion
Paranoia implies a distrust that goes beyond normal caution and can hint at irrationality. Even though there was no evidence, his paranoia wouldn't let him trust his loyal friend.
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Not Always Illness
Paranoia can describe a symptom of suspicion without the presence of a mental health diagnosis. She felt a wave of paranoia when walking alone at night, even though the streets were safe.
Pro Tip 3/3
Negative Connotation
Using 'paranoia' can imply that concerns are unfounded or exaggerated. His claims were dismissed as paranoia, despite his insistence on the risks involved.