third-class

Adjective

not-comparable

Most inferior in quality or standing.

Japanese Meaning

最も劣る品質または地位にある / 三流の、下等の

The company shipped a batch of third-class components that failed within days of installation.

その会社は、取り付けから数日で故障した低品質の部品を出荷しました。

Sense（1）

Most inferior in quality or standing.

Travelling third-class isn't just slow, it's painful.