Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun delirium

2 senses of delirium

Sense 1
craze, delirium, frenzy, fury, hysteria -- (state of violent mental agitation)
       => mania, manic disorder -- (a mood disorder; an affective disorder in which the victim tends to respond excessively and sometimes violently)

Sense 2
delirium -- (a usually brief state of excitement and mental confusion often accompanied by hallucinations)
       => mental disorder, mental disturbance, disturbance, psychological disorder, folie -- ((psychiatry) a psychological disorder of thought or emotion; a more neutral term than mental illness)