High-class and Upper-crust

High-class adjective - Of the very best kind.

Upper-crust and high-class are semantically related. in first-class topic. In some cases you can use "Upper-crust" instead an adjective phrase "High-class".

Upper-crust adjective - Of high birth, rank, or station.

High-class and upper-crust are semantically related. Sometimes you can use "High-class" instead an adjective phrase "Upper-crust".