Adjective bad has 14 senses
  1. bad - 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"
    Antonyms:
    worse, better, amended, finer, improved, bad, good, bang-up, bully, corking, cracking, dandy, great, groovy, keen, neat, nifty, not bad, peachy, slap-up, swell, smashing, good enough, goodish, redeeming, satisfactory, acceptable, solid, suitable, superb, well-behaved, well behaved, hot
  2. bad, big - very intense; "a bad headache"; "in a big rage"; "had a big (or bad) shock"; "a bad earthquake"; "a bad storm"
    Antonyms: worse, worsened, better, fitter, healthier, 14 senses of bad , bad, big
    Antonym: mild (indirect, via intense)
    Antonym: mild (indirect, via intense)
  3. bad, tough - feeling physical discomfort or pain (`tough' is occasionally used colloquially for `bad'); "my throat feels bad"; "she felt bad all over"; "he was feeling tough after a restless night"
    Antonyms: bad, tough
    Antonyms: comfortable, comfy (indirect, via uncomfortable)
    Antonyms: comfortable, comfy (indirect, via uncomfortable)
  4. bad, spoiled, spoilt - (of foodstuffs) not in an edible or usable condition; "bad meat"; "a refrigerator full of spoilt food"
    Antonyms: bad, spoiled, spoilt
    Antonym: fresh (indirect, via stale)
    Antonym: fresh (indirect, via stale)
  5. bad, uncollectible - not capable of being collected; "a bad (or uncollectible) debt"
    Antonyms: bad, uncollectible
    Antonym: valid (indirect, via invalid)
    Antonym: valid (indirect, via invalid)
  6. bad - below average in quality or performance; "a bad chess player"; "a bad recital"
    Antonym:
    bad
    Antonym: superior (indirect, via inferior)
    Antonym: superior (indirect, via inferior)
  7. bad - nonstandard; "so-called bad grammar"
    Antonym:
    bad
    Antonyms: standard, received (indirect, via nonstandard)
    Antonyms: standard, received (indirect, via nonstandard)
  8. bad, insecure, risky, high-risk, speculative - not financially safe or secure; "a bad investment"; "high risk investments"; "anything that promises to pay too much can't help being risky"; "speculative business enterprises"
    Antonyms: bad, insecure, risky, high-risk, speculative
    Antonym: sound (indirect, via unsound)
    Antonym: sound (indirect, via unsound)
  9. bad, unfit, unsound - physically unsound or diseased; "has a bad back"; "a bad heart"; "bad teeth"; "an unsound limb"; "unsound teeth"
    Antonyms: bad, unfit, unsound
    Antonym: healthy (indirect, via unhealthy)
    Antonym: healthy (indirect, via unhealthy)
  10. bad - capable of harming; "bad habits"; "bad air"; "smoking is bad for you"
    Antonym:
    bad
    Antonym: harmless (indirect, via harmful)
    Antonym: harmless (indirect, via harmful)
  11. bad, sorry - keenly sorry or regretful; "felt bad about letting the team down"; "was sorry that she had treated him so badly"; "felt bad about breaking the vase"
    Antonyms: bad, sorry
    Antonym: happy (indirect, via unhappy)
    Antonym: happy (indirect, via unhappy)
  12. bad, immoral - characterized by wickedness or immorality; "led a very bad life"
    Antonyms: bad, immoral
    Antonym: good (indirect, via evil)
    Antonym: good (indirect, via evil)
  13. bad, forged - reproduced fraudulently; "like a bad penny..."; "a forged twenty dollar bill"
    Antonyms: bad, forged
    Antonyms: genuine, echt (indirect, via counterfeit)
    Antonyms: genuine, echt (indirect, via counterfeit)
  14. bad, defective - not working properly; "a bad telephone connection"; "a defective appliance"
    Antonyms: bad, defective
    Antonym: functioning (indirect, via malfunctioning)
    Antonym: functioning (indirect, via malfunctioning)
,Adverbial worse has 1 sense
  1. worse - (comparative of `ill') in a less effective or successful or desirable manner; "he did worse on the second exam"
,Noun worse has 1 sense
  1. worse - something inferior in quality or condition or effect; "for better or for worse"; "accused of cheating and lying and worse"
    --1 is a kind of
    bad, badness
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