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adjective, \ˈbad\

Simple Definition of bad

  • : low or poor in quality

  • : not correct or proper

  • : not pleasant, pleasing, or enjoyable

Source: Merriam-Webster's Learner's Dictionary

Full Definition of bad

worse play \ˈwərs\ worst play \ˈwərst\

  1. 1 a :  failing to reach an acceptable standard :  poor <a bad repair job> b :  unfavorable <make a bad impression> c :  not fresh :  spoiled <bad fish> d :  not sound :  dilapidated <the house was in bad condition>

  2. 2 a :  morally objectionable :  evil <bad men> b :  mischievous, disobedient <a bad dog>

  3. 3 :  inadequate or unsuited to a purpose <a bad plan> <bad lighting>

  4. 4 :  disagreeable, unpleasant <bad news>

  5. 5 a :  injurious, harmful <a bad influence> b :  serious, severe <in bad trouble> <a bad cough>

  6. 6 :  incorrect, faulty <bad grammar>

  7. 7 a :  suffering pain or distress <felt generally bad> b :  unhealthy, diseased <bad teeth>

  8. 8 :  sorrowful, sorry <feels bad about forgetting to call>

  9. 9 a :  invalid, void <a bad check> b :  not able to be collected <a bad debt>

  10. 10 badder baddest slang a :  good, great b :  tough, mean

badness noun

Examples of bad in a sentence

  1. The house is in bad condition.

  2. a letter written in bad French

  3. He had a bad day at the office.

  4. I was having a bad dream.

  5. She made a very bad impression on her future colleagues.

  6. We've been having bad weather lately.

  7. The medicine left a bad taste in his mouth.

  8. It's a bad time for business right now.

  9. Things are looking pretty bad for us at this point.

  10. I have a bad feeling about this.

Origin of bad

Middle English

First Known Use: 14th century

Rhymes with bad




Simple Definition of bad

  • : morally bad forces or influences

  • the bad : the unpleasant things that happen to people

  • : things that are morally wrong

Source: Merriam-Webster's Learner's Dictionary

Full Definition of bad

  1. 1 :  something that is bad

  2. 2 :  an evil or unhappy state

  3. 3 :  fault 4 <the mistake was my bad>

Examples of bad in a sentence

  1. There's more good than bad in him.

  2. We need to teach our children the difference between good and bad.

  3. teaching children the difference between the good and the bad

  4. He believes that the good go to heaven when they die and the bad go to hell.

15th Century

First Known Use of bad

15th century




Definition of bad

  1. :  badly <not doing so bad> <doesn't want it bad enough>

BAD Defined for Kids


adjective \ˈbad\

Definition of bad for Students

worse \ˈwərs\worst \ˈwərst\

  1. 1 :  not good :  poor <bad weather> <bad work>

  2. 2 :  not favorable <a bad report> <bad times>

  3. 3 :  not fresh or sound <bad meat>

  4. 4 :  not good or right :  evil <a bad person>

  5. 5 :  not behaving properly <a bad dog>

  6. 6 :  not enough <bad lighting>

  7. 7 :  unpleasant <bad news>

  8. 8 :  harmful <bad for the health>

  9. 9 :  serious 2, severe <a bad cold> <in bad trouble>

  10. 10 :  not correct <bad spelling> <bad manners>

  11. 11 :  not cheerful or calm <a bad mood>

  12. 12 :  not healthy <bad teeth> <He felt bad from a cold.>

  13. 13 :  sorry 1 <I felt bad about my mistake.>

  14. 14 :  not skillful <a bad musician>

badness noun

Law Dictionary



Legal Definition of bad

  1. :  not valid :  void <bad notice>; especially :  not covered by sufficient funds <a bad check>

Seen and Heard

What made you want to look up bad? Please tell us where you read or heard it (including the quote, if possible).


the range of perception or understanding

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