paranoia
1 ENTRIES FOUND:
Britannica Dictionary definition of PARANOIA
[noncount]
1
medical
:
a serious mental illness that causes you to falsely believe that other people are trying to harm you
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She was diagnosed with delusional paranoia.
2
:
an unreasonable feeling that people are trying to harm you, do not like you, etc.
-
I had to admit that my fears were just paranoia.
