1. characterized by wild, unrestrained celebration or indulgence
2. relating to or resembling an orgy
Usage: often used metaphorically

Examples

• The fans engaged in orgiastic celebrations after their team won the championship.
• The festival featured orgiastic dancing that lasted until dawn.
• Critics described the spending spree as an orgiastic display of wealth.
• The concert crowd’s orgiastic enthusiasm overwhelmed the security guards.
• The novel depicted the orgiastic excesses of the Roman empire.
• Wall Street experienced an orgiastic frenzy of trading before the crash.