bad
A1Pronunciation
UK
- /bˈæd/
US
- /ˈbæd/
Meanings
Adjective
not good; poor in quality or undesirable
morally wrong or badly behaved
serious, severe, or harmful
More meaningsFewer meanings
(slang)impressively good, tough, or cool
Beyond the definition
"Bad" seems simple enough—it's the classic opposite of "good." But "bad" carries a surprising amount of weight! A "bad apple" is spoiled, a "bad decision" leads to trouble, and a "bad mood" can ruin your entire afternoon. It describes anything that fails to meet expectations, lacks quality, or causes genuine harm. You might suffer from a "bad headache," suggest a "bad idea," or simply "feel bad" about a mistake you made. Interestingly, in certain contexts, "bad" can even mean excellent or cool—though you have to be careful with your timing, as context is everything! Ultimately, think of "bad" as the universal label for anything falling short of what is desirable.
The word "bad" is deceptively complex. At its core, "bad" signifies something undesirable or unfavorable. It is a broad descriptor used to indicate poor quality, inadequacy, or negativity across almost every aspect of life.
Physically, we use "bad" to describe spoilage or decay, such as saying "this milk smells bad." Morally, it characterizes actions and behaviors: "Lying is bad" conveys clear disapproval. A "bad habit" is one that is detrimental to your well-being, while a "bad day" is simply one filled with unpleasant events. "Bad" also serves to measure skill or performance; for instance, "he's a bad driver" implies a lack of competence. It even functions as an intensifier for illness, such as when you have a "bad cold."
In modern slang, particularly within African American Vernacular English (AAVE), "bad" has famously been inverted to mean very good, tough, or attractive (e.g., "That car is bad!"). While this usage has gained global popularity, it is crucial to remain mindful of the setting to avoid confusion.
Furthermore, "bad" frequently acts as a modifier in compound words and phrases to indicate deficiency or ill intent, such as in "bad-tempered," "bad-mouthed," or "bad faith." Whether you are expressing simple disapproval or—surprisingly—enthusiastic praise, "bad" is a versatile linguistic tool that adapts to the situation, describing everything that falls short of the ideal, or occasionally, what brilliantly subverts it.
Examples
- 1
Weather
The weather was bad all weekend.
- 2
Health
I had a bad headache, so I went home early.
- 3
Planning
That's a bad idea if we're trying to save money.
- 4
Skills
She's bad at remembering names.
- Patternbad at + activity/skill
not good at it
More examplesFewer examples
- 5
Health risk
Too much sun is bad for your skin.
- Patternbad for + person/thing
harmful to them or it
- 6
Guilt
I feel bad about what I said yesterday.
- Patternfeel bad about + action/event
feel sorry or guilty about it
- 7
Sympathy
I felt bad for him when nobody laughed at his joke.
- Patternfeel bad for + person
feel sorry for them
- 8
Food spoilage
The milk went bad before we could use it.
- Phrasego bad
stop being fresh and safe to eat
- 9
Medical news
We got some bad news from the hospital this morning.
- 10
Money habits
He's bad with money, so he never sticks to a budget.
- Patternbad with + thing
not good at handling it
- 11
Mild praise
The movie was not bad, actually.
- Phrasenot bad
fairly good or better than expected
- 12
Worsening situation
After the car broke down, the day went from bad to worse.
- Phrasefrom bad to worse
becoming even more difficult or unpleasant
See also
Forms and spellings
3 forms open this card.
Main spelling
- badadjectiveadverbnoun
Forms
- worstsuperlativeadjectiveadverbnoun
- worsecomparativeadjectiveadverbnoun