大致 vs 大概 (dàzhì vs dàgài): broad outline or probability
Both 大致 and 大概 can be translated as 'roughly' or 'generally', but they serve different functions: 大致 describes a general outline or main points without details, while 大概 expresses probability or an approximate numerical value. Understanding the core distinction—outline vs. likelihood—helps avoid common errors.
大致 and 大概 are both adverbs that can mean 'roughly' or 'generally', but they focus on different aspects. 大致 emphasizes a broad sketch or outline of a situation without going into details; it is used when describing the main points or a general idea. 大概, on the other hand, indicates probability, likelihood, or an approximate quantity (numbers, time, distance). While they can sometimes be used similarly in vague statements (e.g., '大致如此' and '大概如此' both work), 大概 is also a noun meaning 'a rough idea', and 大致 is not used as a noun.
When to use each
Use 大致 when you want to describe a general outline, main points, or a situation without precise details. It is common in summaries, overviews, or when giving a high-level description of something (e.g., 大致情况, 大致意思). It can also be used with numbers in a rough sense (e.g., 大致相同 'roughly the same'), but it does not imply probability.
大致 can sometimes be used where 大概 would also fit (e.g., 大致如此 vs 大概如此), but the nuance is that 大致 focuses on the outline, while 大概 suggests a subjective estimate or likelihood.
Use 大概 when expressing an estimate of quantity (time, number, distance) or when speculating about probability. It can be an adverb (大概有十个人 'there are probably ten people') or a noun meaning 'a rough idea' (说个大概 'give a general idea'). Unlike 大致, 大概 carries a sense of conjecture or approximation based on incomplete information.
As a noun, 大概 can be used with a classifier (e.g., 一个大概, but more naturally 说个大概 or 知道个大概). It is common in spoken Chinese to mean 'a rough understanding'.
At a glance
| 大致 | 大概 | |
|---|---|---|
| Core meaning | General outline without details | Probability or approximate quantity |
| Used with numbers | Yes, to indicate rough equality (e.g., 大致相同) | Yes, to indicate an approximate number (e.g., 大概一百个) |
| Used as a noun | No | Yes: 说个大概, 知道个大概 |
| Implies probability | No | Yes (when expressing likelihood) |
Examples
- 大致他对这件事只有大致的了解。Tā duì zhè jiàn shì zhǐyǒu dàzhì de liǎojiě.He only has a general understanding of this matter.Here 大致 means a broad outline, not a probable guess.
- 大致这两种方案大致相同。Zhè liǎng zhǒng fāng'àn dàzhì xiāngtóng.These two plans are roughly the same.大致 indicates overall similarity, not an estimated number.
- 大概他大概已经走了。Tā dàgài yǐjīng zǒu le.He has probably already left.大概 expresses probability, not a general outline.
- 大概从这里到车站大概十分钟。Cóng zhèli dào chēzhàn dàgài shí fēnzhōng.It's about ten minutes from here to the station.大概 gives an approximate time estimate.
- 大概我只能说个大概，详细情况不清楚。Wǒ zhǐ néng shuō ge dàgài, xiángxì qíngkuàng bù qīngchu.I can only give a rough idea; I don't know the details.Here 大概 is a noun meaning 'a general outline'.
Common mistakes
- Using 大致 to express probability: '*他大致已经走了' should be '他大概已经走了'.
- Using 大概 to describe a general outline without any probability: '*大概而言' is rare; prefer '大致而言' (generally speaking).
- Treating 大致 as a noun: '*一个大致' is incorrect; 大致 is not used as a noun.
- Overusing 大概 for every 'rough' meaning: when you simply mean 'in broad terms' without any estimation, use 大致.
FAQ
- When do I use 大致 vs 大概 for 'roughly'?
- Use 大致 when you want to give a general outline or summary without details. Use 大概 when you want to indicate an approximate number, time, or a probability. For example, '大致情况' (general situation) vs '大概十点' (probably ten o'clock).
- Can 大概 be a noun?
- Yes, 大概 can be a noun meaning 'a rough idea' or 'outline'. For example, '说个大概' (give a general idea). 大致 cannot be used as a noun.
- Are 大致 and 大概 interchangeable in '大致如此' and '大概如此'?
- Both are correct and common, but the nuance differs: 大致如此 emphasizes 'this is the general outline', while 大概如此 suggests 'this is probably the case'. In many contexts they are interchangeable, but careful speakers choose based on whether they want to stress outline or probability.