"Tiered" describes something arranged in separate levels or layers, stacked on top of each other - like a wedding cake with three tiers (one smaller layer on top of the other), or stadium seating that is "tiered", with higher rows behind lower ones so everyone can see. Businesses also use "tiered" for pricing - a "tiered pricing system" has different levels, like basic, standard, and premium, each with a different price.

分層的、階梯狀的;(定價、方案)分級的。