顽 ⇒
顽固 wángù, [頑固], stubborn/obstinate
顽强 wánqiáng, [頑強], tenacious/hard to defeat
顽皮 wánpí, [頑皮], naughty
老顽固 顽固不化 顽童 wántóng, [頑童], urchin
负隅顽抗 顽 wán, [頑], mischievous/obstinate/to play/stupid/stubborn/naughty
顽石 顽抗 冥顽 míngwán, [冥頑], stupid/stubborn
冥顽不灵 míngwánbùlíng, [冥頑不靈], stupid/stubborn/pigheaded
顽疾 wánjí, [頑疾], ineradicable disease/fig. deep-seated problem/perennial problem
顽固派 顽固性 顽症 wánzhèng, [頑症], stubborn illness/disease that is difficult to treat
死顽固 sǐwángù, [死頑固], very stubborn/very stubborn person/die-hard
劣 ⇒
恶劣 èliè, [惡劣], vile/nasty/of very poor quality
卑劣 bēiliè, base/mean/despicable
劣势 lièshì, [劣勢], inferior/disadvantaged
劣质 lièzhì, [劣質], shoddy/of poor quality
拙劣 zhuōliè, clumsy/botched
低劣 dīliè, inferior quality/substandard/low-grade
劣 liè, inferior
劣等 劣迹 lièjì, [劣跡], bad record (esp. of a public official)/unsavory track record
优胜劣汰 yōushèngliètài, [優勝劣汰], survival of the fittest (idiom)
优劣 yōuliè, [優劣], good and bad/merits and drawbacks
伪劣 wěiliè, [偽劣], inferior/false
劣马 劣等货 粗劣 cūliè, coarse
劣货 劣根性 假冒伪劣 jiǎmàowěiliè, [假冒偽劣], cheap quality counterfeit (goods)/low-quality commodities
劣等生 劣种 劣质品