- 营养不良 yíngyǎngbùliáng malnutritionmalnutrition; undernourishment; a physical condition resulting from a lack of proper nutrients
- 消化不良 xiāohuàbùliáng indigestionindigestion; dyspepsia; a condition where the digestive system fails to function properly due to overeating or other factors
- 发育不良 fāyùbùliáng maldevelopmentabnormal growth or development of the body or its parts; dysplasia
- 居心不良 jūxīnbùliáng to harbor evil intentionsTo harbor evil intentions; used as an idiom to describe someone with malicious motives.
- 不良分子 bùliángfènzǐ undesirablespeople who do bad things or do not follow the law; scum; bad elements
- 存心不良 cúnxīnbùliáng to harbor evil intentionsto have a malicious heart or bad motives; to be up to no good
- 不良影响 bùliángyǐngxiǎng harmful effectbad influence; adverse or harmful effects
- 不良贷款 bùliángdàikuǎn non-performing loanA bank loan where the borrower has failed to make scheduled payments of principal or interest according to the contract
- 不良适应 bùliángshìyìng maladjustmentInability of an individual to harmonize with or adapt to their social, educational, or work environment, often leading to psychological distress or behavioral issues; also written as [[适应不良|適應不良|shi4 ying4 bu4 liang2]]
- 再生不良性贫血 zàishēngbùliángxìngpínxuè aplastic anemiaa serious condition where the body stops producing enough new blood cells
- 咬合不良 yǎohébùliáng malocclusionmisalignment of the teeth or an incorrect relation between the teeth of the two dental arches
- 接触不良 jiēchùbùliáng loose contacta loose or defective electrical connection
- 杜兴氏肌肉营养不良症 dùxīngshìjīròuyíngyǎngbùliángzhèng Duchenne muscular dystrophyA genetic disorder characterized by progressive muscle degeneration and weakness
- 不良倾向 bùliángqīngxiàng harmful trendharmful trend; unhealthy tendency
- 素行不良 sùxíngbùliáng notorious for bad behaviorHaving a long history of poor conduct or habitual misbehavior
- 肌营养不良症 jīyíngyǎngbùliángzhèng muscular dystrophya group of hereditary diseases characterized by the progressive weakening and wasting of the muscles
- 不良人 bùliángrén constable(historical) a local official or runner responsible for tracking down and arresting criminals during the Tang Dynasty; often led by a chief called a [[不良帅|不良帥|bu4 liang2 shuai4]]
- 适应不良 shìyìngbùliáng maladjustmentCondition of being unable to adapt or adjust to one's environment or circumstances
- 不良导体 bùliángdǎotǐ poor conductorA material that does not easily transfer electricity or heat, such as glass or wood; wood; a non-conductor.
- 顺应不良 shùnyìngbùliáng maladjustmentthe inability to adjust or adapt to a new situation or environment
- 不良少年 bùliángshàonián juvenile delinquenta teenager or youth who exhibits bad behavior or engages in criminal activity
- 不良帅 bùliángshuài chief constablethe chief or leader of a local law enforcement unit during the Tang Dynasty