Adjective
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. very intense;
"a bad headache""in a big rage""had a big (or bad) shock""a bad earthquake""a bad storm"3. 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"4. (of foodstuffs) not in an edible or usable condition;
"bad meat""a refrigerator full of spoilt food"5. not capable of being collected;
"a bad (or uncollectible) debt"6. below average in quality or performance;
"a bad chess player""a bad recital"7. nonstandard;
"so-called bad grammar"8. 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"9. physically unsound or diseased;
"has a bad back""a bad heart""bad teeth""an unsound limb""unsound teeth"10. capable of harming;
"bad habits""bad air""smoking is bad for you"11. 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"12. characterized by wickedness or immorality;
"led a very bad life"13. reproduced fraudulently;
"like a bad penny...""a forged twenty dollar bill"14. not working properly;
"a bad telephone connection""a defective appliance"