劣质 lièzhì shoddy
shoddy; of poor quality
How to remember 劣质: 劣 low-quality + 质 essence = shoddy.
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How it is used
- Of inferior/shoddy quality - 劣质产品 (lièzhì chǎnpǐn) shoddy goods; 劣质材料 poor materials.
- Attributive, strongly negative; opposite of 优质 (yōuzhì, high quality) - 优质服务 (yōuzhì fúwù) high-quality service.
- Often in consumer-safety and market contexts (劣质食品 substandard food).