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 (hē′bə-frē′nē-ə, -frĕn′ē-)
A type of schizophrenia characterized by disorganized speech and behavior, flat or inappropriate affect, and sometimes silly or inappropriate mannerisms. Also called disorganized schizophrenia.

[Greek hēbē, youth (because the onset of the disorder typically occurs in adolescence or young adulthood) + -phrenia.]

he′be·phren′ic (-frĕn′ĭk, -frē′nĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.hebephrenic - suffering from a form of schizophrenia characterized by foolish mannerisms and senseless laughter along with delusions and regressive behavior
insane - afflicted with or characteristic of mental derangement; "was declared insane"; "insane laughter"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Cannabinoid receptor 1 gene (CNR1) and susceptibility to a quantitative phenotype for hebephrenic schizophrenia.
hebephrenic, catatonic, undifferentiated and paranoid.
Depending on the specific subtype, there are predominant positive (paranoid schizophrenia) or negative (hebephrenic schizophrenia and catatonic schizophrenia) symptoms, and these are the most common subtypes in the Nietzsche era.
Traditional classifications (such as paranoid type, hebephrenic type, catatonic type, and simple type) have apparently failed to meet the needs of scientific research.
We detect memory disorders or of other precursors of the intellect in such patients, as well as the loss of knowledge and of thinking abilities, and the occurrence of modifications of behavior that looks like "hebephrenic bizarreness".