Inferiority
Coarseness
noun, な adjective
Inferiority is bad. It is inferiority, after all.
れつあく
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
劣悪な職場環境の会社は、日本ではしばしば「ブラック企業」と呼ばれます。
Companies with very rough work environments are often called "black companies" in Japan.