de·lir·i·um 
(dĭ-lîrē-əm)
(dĭ-lîrē-əm)n. pl. de·lir·i·ums or de·lir·i·a (-ē-ə)
1. A temporary state of mental confusion and fluctuating consciousness resulting from high fever, intoxication, shock, or other causes. It is characterized by anxiety, disorientation, hallucinations, delusions, and incoherent speech.
2. A state of uncontrolled excitement or emotion: sports fans in delirium after their team's victory.
[Latin dēlīrium, from dēlīrāre, to be deranged : dē-, de- + līra, furrow; see leis-1 in the Appendix of Indo-European roots.]
de·liri·ant adj.
- Indo-European root: swer-
- Indo-European root: swesor-
- Indo-European root: swo-
- Indo-European root: swād-
- Indo-European root: syū-
- Indo-European root: sā-
- Indo-European root: sāg-
- Indo-European root: sāwel-
- Indo-European root: sē-
- Indo-European root: sēmi-
- Indo-European root: sū-
- Indo-European root: tag-
- Indo-European root: tauro-
- Indo-European root: tegu-
- Indo-European root: tek-
- Indo-European root: teks-
- Indo-European root: telə-
- Indo-European root: tem-
- Indo-European root: ten-
- Indo-European root: terkw-
- Indo-European root: ters-
- Indo-European root: terə-
- Indo-European root: terə-
- Indo-European root: teutā-
- Indo-European root: teuə-