high-grade

Of high quality, particularly good.

Japanese Meaning

高品質な / 上質な / 高級な

The chef preferred using high-grade olive oil to enhance the flavor of the dish.

シェフは料理の風味を高めるために、上質なオリーブオイルを使うことを好んだ。

Sense（1）

Of high quality, particularly good.

The high-grade ore was much more profitable than lower-grade ore.

higher grade

（ comparative ）

highest grade

（ superlative ）