adjective
orgiastic
or-jee-AS-tik/ˌɔːrdʒiˈæstɪk/
Marked by wildly unrestrained pleasure or revelry.
The orgiastic celebration sends food and cups tumbling as the adults dance wildly.

Etymology
Greek orgiastikos referred to religious celebrations marked by extravagant dancing, singing, and drinking. That association with wild revelry underlies the broader sense of frantically enthusiastic or uncontrolled pleasure.
More examples
- The banquet becomes an orgiastic feast of rich food and wine.
- The pounding music sends the dancers into an orgiastic frenzy.
- The novel describes an orgiastic party full of drinking and sex.
Forms
orgiastic
orgy noun — A gathering marked by unrestrained indulgence.