1. in a very impressive, dramatic, or remarkable way
2. in a way that involves complete failure or disaster

Examples

• The fireworks display ended spectacularly with a burst of golden light.
• She performed spectacularly in the championship game.
• The mountain views were spectacularly beautiful at sunrise.
• His business venture failed spectacularly within six months.
• The team spectacularly collapsed in the final quarter.
• The aurora borealis danced spectacularly across the night sky.
• The stock market crashed spectacularly in 1929.