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English definition of “paranoia”

paranoia

noun     /ˌpær.əˈnɔɪ.ə/ US  /ˌper-/
[C or U] an extreme and unreasonable feeling that other people do not like you or are going to harm or criticize you: There's a lot of paranoia about crime at the moment .Mental and psychiatric disorders [U] specialized psychology Someone who has paranoia has unreasonable false beliefs as a part of another mental illness , for example schizophrenia.Mental and psychiatric disorders
(Definition of paranoia noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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