paranoia

noun
para*noia \ ˌper-ə-ˈnȯi-ə \ ˌpa-rə- \
1887{ds||1||}
  • mental illness characterized by systematized delusions of persecution or grandeur usually without hallucinations
  • a tendency on the part of an individual or group toward excessive or irrational suspiciousness and distrustfulness of others
Powered by Merriam-Webster