paranoia
noun
para·noia
ˌper-ə-ˈnȯi-ə
ˌpa-rə-
1
: mental illness characterized by systematized delusions of persecution or grandeur usually without hallucinations
Psychotic symptoms and paranoia persisted, and she continued to "find clues" of conspiracy against her.—Helen K. Delichatsios et al.
2
: a tendency on the part of an individual or group toward excessive or irrational suspiciousness and distrustfulness of others
… Arthur Miller dramatized the ways that a society's paranoia and fear during periods of uncertainty and change can turn into a witch hunt.—Elaine Showalter
paranoiac
adjective or noun
or less commonly paranoic
Cite this Entry
“Paranoia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/paranoia. Accessed 4 Sep. 2026.
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