悪質

(1)of low or inferior quality

(2)低いか劣った品質の

(3)marked by deep ill will; deliberately harmful; "poisonous hate"; "venomous criticism"; "vicious gossip"

(4)激しい憎悪を特徴とする

(5)意図的に害を及ぼす

(6)morally bad in principle or practice

(7)主義または習慣上、倫理的に悪い