pandemoniac

adjective

pan·​de·​mo·​ni·​ac

¦pandə¦mōnēˌak

variants or less commonly pandemonic

-mänik

or pandemoniacal

¦pandəmə¦nīəkəl

1

: of or relating to or resembling Pandemonium : infernal

2

: having the character of a pandemonium : riotous

several hundred thousand hysterical … youths roaring pandemoniac approval

—J. A. Morris, born 1904

Word History

Etymology

pandemonium + -ac (after demoniac) or -ic (after demonic) or -acal (after demoniacal)

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