Which word signifies something that is plentiful or extravagant?

The word that signifies something that is plentiful or extravagant is "profuse." This term is often used to describe something that is abundant, overflowing, or given freely and generously. For example, one might refer to profuse amounts of rain or shower someone with profuse compliments, emphasizing the excessiveness or generosity involved.

In contrast, "proliferate" refers to the rapid increase or multiplication, often used in contexts involving growth and spread rather than the richness or extravagant quality itself. "Puckered" describes a wrinkled or contracted state, typically relating to physical textures or appearances rather than quantity or abundance. Lastly, "predilection" indicates a preference or fondness for something, which is not inherently related to the idea of abundance or excess.