IPA: /səˈtɜrnəˌleɪən/
KK: /səˈtɜrnəˌleɪn/
Relating to a festival of unrestrained joy and celebration, often characterized by excessive merriment and revelry.
The party took on a saturnalian atmosphere, with everyone dancing and celebrating without a care in the world.
Saturnalian is derived from "Saturnus" (the Roman god of agriculture and time) and the suffix "-ian" (meaning relating to or characterized by). The term refers to the festival of Saturnalia, which was characterized by revelry and merrymaking, thus describing something that is festive or indulgent in nature.
Think of the Roman god Saturn, who represents a time of celebration and revelry, to remember that 'saturnalian' describes a festive and indulgent atmosphere.
No commonly confused words.