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1. (superlative of 'bad') most wanting in quality, value or condition
   "the worst player on the team"; "the worst weather of the year"

1. The least favourable outcome
   "the worst that could happen"
    
2. The greatest damage or wickedness of which one is capable
   "the invaders did their worst"; "so pure of heart that his worst is another man's best"
    
3. The weakest effort or poorest achievement one is capable of
   "it was the worst he had ever done on a test"

1. Defeat thoroughly
   - mop up, whip [informal], rack up

1. To the highest degree of inferiority or badness
   "She suffered worst of all"; "schools were the worst hit by government spending cuts"; "the worst dressed person present"

1. Having undesirable or negative qualities
   "a bad report card"; "his sloppy appearance made a bad impression"; "a bad little boy"; "clothes in bad shape"; "a bad cut"; "bad luck"; "the news was very bad"; "the reviews were bad"; "the pay is bad"; "it was a bad light for reading"; "the movie was a bad choice"
    
2. Feeling or expressing regret or sorrow or a sense of loss over something done or undone
   "he felt bad about breaking the vase";
   - regretful, sorry
    
3. Serious or severe
   "a bad headache"; "had a bad shock"; "a bad earthquake"; "a bad storm";
   - big
    
4. Feeling physical discomfort or pain ('tough' is occasionally used colloquially for 'bad')
   "my throat feels bad"; "she felt bad all over";
   - tough
    
5. (of foodstuffs) not in an edible or usable condition
   "bad meat";
   - spoiled, spoilt
    
6. Not capable of being collected
   "a bad debt";
   - uncollectible
    
7. Below average in quality or performance
   "a bad chess player"; "a bad recital"
    
8. (linguistics) nonstandard
   "so-called bad grammar"
    
9. Not financially safe or secure
   "a bad investment";
   - risky, high-risk, speculative
    
10. Physically unsound or diseased
    "has a bad back"; "a bad heart"; "bad teeth";
    - unfit, unsound
     
11. Capable of harming
    "bad air"; "smoking is bad for you"
     
12. Characterized by wickedness or immorality
    "led a very bad life"
     
13. Reproduced fraudulently
    "like a bad penny...";
    - forged
     
14. Not working properly
    "a bad telephone connection";
    - defective

Derived forms: worsted, worsting, worsts

See also: abominable, atrocious, awful, bottom, corked, corky, counterfeit, crummy [informal], deplorable, dire [Brit, informal], disobedient, distressing, dreadful, evil, fearful, frightful, hard, harmful, hopeless, horrible, horrid, icky [informal], ill, imitative, incompetent, inferior, intense, invalid, lamentable, last, last-place, lousy [informal], lowest, malfunctioning, mediocre, naughty, negative, no-good, nonfunctional, nonstandard, painful, penitent, pessimal, pessimum, pitiful, pretty [informal], quality, repentant, rotten, rubber, rubbish [Brit, informal], sad, severe, sorry, stale, stinking, stinky [informal], swingeing [Brit, informal], terrible, tough, uncomfortable, uncool [informal], unfavorable [US], unfavourable [Brit, Cdn], unhealthy, unhip [informal], unskilled, unsound, unspeakable, unsuitable, worse

Type of: attempt, beat, beat out, crush, effort, endeavor [US], endeavour [Brit, Cdn], evil, evilness, final result, outcome, result, resultant, shell, termination, trounce, try, vanquish

Antonym: best, good, unregretful

Encyclopedia: Worst, Martha