• (euphoria) Euphoria is an overwhelming and all-encompassing feeling of intense inner sense of joy, happiness, excitement, or elation that is far beyond and blatantly abnormal for what would typically be anticipated in the context or social circumstance. It is experienced as an unusual pleasurable feeling often with an inspirational sense of profound insight.
  Human Phenotype Ontology (HPO)
  The Human Phenotype Ontology Project, 2025
• (euphoria) Abnormally excessive and unfounded elevation in mood.
  NICHD Pediatric Terminology
  U.S. National Cancer Institute, 2021
• (euphoria) An exaggerated feeling of physical and emotional well-being not consonant with apparent stimuli or events; usually of psychologic origin, but also seen in organic brain disease and toxic states.
  NLM Medical Subject Headings
  U.S. National Library of Medicine, 2025
• (euphoria) An exaggerated feeling of well-being which is disproportionate to events and stimuli. It may result from psychological causes, organic brain syndromes, or toxic states.
  NCI
  U.S. National Cancer Institute, 2021
• (euphoria) Exaggerated feeling of physical and emotional well-being and optimism not consonant with apparent stimuli or events; usually of psychologic origin, but also seen in organic brain disease and toxic states.
  CRISP Thesaurus
  National Institutes of Health, 2006
• (euphoria) Exaggerated feeling of well-being that is inappropriate to real events. Can occur with drugs such as opiates, amphetamines and alcohol.
  Sadock's Comprehensive Glossary of Psychiatry and Psychology
  BJ Sadock Titles Press, 2012
• A psychological state of extreme happiness or elation.
  NCI
  U.S. National Cancer Institute, 2021