bad

• 形容事物质量低劣、令人不快或不符合期望，也可指人品行不好或某事有害、不利。

Describes something of poor quality, unpleasant, or undesirable.

1. Not good or poor qualityA1informal

   Of low quality, unpleasant, or unsatisfactory.

   坏的

   • This is a bad movie.
   • The weather is bad today.
   • He had a bad experience at the restaurant.

   同义词awfulcrummydefectivedeficientdreadfulfaultyinadequateinferiorlousylow-grademediocrepoorsecond-rateshoddysubstandardterribleunacceptableunsatisfactory

   反义词excellentfinefirst-rategoodgreatsuperior

2. Harmful or dangerousA1formal

   Causing harm, damage, or injury.

   有害的

   • Smoking is bad for your health.
   • That's a bad idea.
   • The bad weather caused the accident.

   同义词damagingdangerousdestructivedetrimentalharmfulhazardoushurtfulinjuriousperilousunsafe

   反义词beneficialharmlesshelpfulsafesalutary

3. Ill or unwellA1informal

   Feeling sick or in poor health.

   不舒服

   • I feel bad today.
   • She has a bad cold.
   • He felt bad after eating too much.

   同义词ailingillindisposedpoorlysickunwell

   反义词finehealthywell

4. Morally wrong or evilA2formal

   Not morally right; wicked or criminal.

   道德上的坏

   • Stealing is bad behavior.
   • That's a bad person.
   • He did something bad and got punished.

   同义词corruptdepravedevilimmoraliniquitousnefarioussinfulvillainouswickedwrong

   反义词ethicalgoodjustmoralrightrighteousuprightvirtuous

5. Severe or intenseB1informal

   Used to emphasize the degree of something negative.

   严重的

   • We had a bad storm last night.
   • It's a bad headache.
   • She has a bad temper.

   同义词acuteawfulcriticalextremegraveintenseseriousseverestrongterrible

   反义词mildslight

• 口语中用来表示质量差、程度低，或表示程度高、非常。

In casual or non-standard speech, this term functions to modify verbs, indicating either a high level of intensity or that an action is performed in an unsatisfactory manner.

1. To a great degreeB1informalamerican

   Used as an intensifier with verbs expressing desire, need, or physical sensation to show extreme depth.

   非常想

   • I need a vacation so I can't even focus on my work.
   • He wanted that promotion so that he stayed late every night for a month.
   • The athlete was hurting after the collision on the field.
   • They missed their home country real after living abroad for five years.
   • She wanted to win the race so and trained throughout the winter.

   同义词desperatelyexceedinglygreatlyintenselyreallyseriouslyvery much

2. In an unsatisfactory mannerB2informalamerican

   Describing an action that is carried out poorly, incorrectly, or without the expected level of skill.

   差劲地或不好地

   • The team played so that the fans started leaving before the halftime whistle.
   • Things went for the company during the last fiscal quarter.
   • He felt about missing his best friend's wedding due to work.
   • The car was running and making strange noises under the hood.
   • The project started out but we managed to fix the issues eventually.

   同义词inadequatelyincompetentlyincorrectlypoorlyunsatisfactorilywrongly

   反义词well

• 负面的事物、情况或性质；道德上的邪恶、伤害或损害。

A state, condition, or quality characterized by deficiency, harm, immorality, or unfavorable outcomes; also refers to evil or wrongdoing in a moral or philosophical context.

1. Unfavorable condition or harmful qualityA2formal

   A state or characteristic that produces damage, difficulty, or negative consequences, often contrasted with beneficial or desirable attributes in practical, social, or personal contexts.

   坏处，有害的状态

   • The sudden storm created an unfavorable situation for outdoor events.
   • Consumers often complain about poor product durability when quality control fails.
   • Financial advisors warn against investments with high risk and unfavorable returns.
   • The manager addressed the negative work environment before it affected team morale.
   • Health professionals emphasize avoiding habits that compromise long-term well-being.

   同义词adversitycalamitydamageevilharmillinjurymisfortunetroublewoe

   反义词advantageassetbenefitgoodvirtue

2. Moral wrongdoing or evil conductB2formallegal

   Actions, behaviors, or principles that violate ethical standards, cause suffering to others, or contradict established moral frameworks, frequently discussed in philosophical, religious, and legal discourse.

   恶，道德败坏

   • Philosophers have long debated the nature of evil and its impact on human society.
   • Legal systems aim to prevent harmful conduct through established ethical boundaries.
   • Religious traditions often warn against selfish actions that damage community trust.
   • Historical records document how societies penalized unethical behavior across different eras.
   • Moral education programs focus on cultivating empathy and responsible decision-making.

   同义词depravityevilimmoralityiniquitysinvicewickednesswrongdoing

   反义词goodnessmoralityrighteousnessvirtue

3. Financial losses or unfavorable outcomes in transactionsC1informalamericanbusiness

   Monetary deficits, defeated wagers, or unfavorable economic results that occur when investments, trades, or gambling activities fail to meet expected returns, typically referenced in financial or recreational contexts.

   财务损失，亏损

   • Investors carefully track portfolio deficits to adjust their long-term strategies.
   • Professional gamblers accept that occasional losses are part of the game.
   • The company reported significant quarterly deficits due to unexpected market shifts.
   • Traders often hedge against potential downturns to protect their capital.
   • Recreational players should set strict limits to avoid accumulating excessive debts.