萬一

In Case (Unlikely)

Level 3Sounds Like maan6 jat1

Use 萬一 (maan6 jat1) to talk about 'worst-case scenarios' or events that have a very low probability of happening (literally 'one in ten thousand').

How It Works

1. Meaning and Probability
The term 萬一 (maan6 jat1) literally means 'one in ten thousand.' It is used to introduce a contingency plan for a remote possibility. While it can be used for positive surprises (like winning the lottery), it is overwhelmingly used for negative events like accidents, rain, or forgetting something.

2. Sentence Structure
It can appear in two positions:

  • As a Conjunction: 萬一 (maan6 jat1) + [Condition], [Result].
    Example: 萬一落雨，我哋就唔去喇。(In case it rains, we won't go.)
  • As an Adverb: [Subject] + 萬一 (maan6 jat1) + [Verb]...
    Example: 你萬一唔記得咗，就打畀我啦。(In case you forget, just call me.)

3. Common Partners
To sound more natural, 萬一 is often paired with:

  • ...嘅話 (ge3 waa2): Placed at the end of the 'if' clause to reinforce the hypothetical mood.
  • 就 (zau6): Used in the second clause to introduce the result or response.
  • 點算 (dim2 syun3): Often used to ask 'what should be done?' if the unlikely event occurs.

4. The '11,000' Trap
Be careful in financial contexts! In Cantonese shorthand for numbers, 萬一 (maan6 jat1) can mean 11,000 (short for 萬一千 maan6 jat1 cin1). Context will tell you if someone is talking about a 'remote chance' or a 'price tag.'

Examples (4)

  1. 萬一佢唔嚟，我哋點算呀？

    What if he doesn't come (by any chance)? What will we do then?

    Word by Word: Ten-thousand one he not come, we how calculate [particle]?

    Here, 萬一 (maan6 jat1) introduces a negative possibility, and 點算 (dim2 syun3) asks for the contingency plan.

  2. 帶定把遮啦，萬一落雨呢。

    Bring an umbrella just in case it rains.

    Word by Word: Bring ready [classifier] umbrella [particle], ten-thousand one fall rain [particle].

    The particle 呢 (ne1) at the end adds a sense of 'what if?' to the unlikely condition.

  3. 你萬一唔記得咗密碼嘅話，可以去呢度改。

    In case you forget the password, you can change it here.

    Word by Word: You ten-thousand one not remember [aspect] password if, can go here change.

    This shows 萬一 (maan6 jat1) acting as an adverb after the subject 'you', paired with 嘅話 (ge3 waa2).

  4. 唔怕一萬，只怕萬一。

    Don't fear the 10,000 (likely things), only fear the 1 (unlikely accident).

    Word by Word: Not fear one ten-thousand, only fear ten-thousand one.

    A common proverb meaning 'better safe than sorry,' emphasizing that it's the rare accidents that catch you off guard.

Common Mistakes

  • Using 萬一 for highly likely events.

    萬一聽日係星期一，我要返工。
    如果聽日係星期一，我就要返工。

    Since it is certain that tomorrow is Monday (or a 100% logical 'if'), using 萬一 (maan6 jat1) sounds strange. Use 如果 (jyu4 gwo2) for general conditions.

  • Confusing the 'unlikely event' with the 'prevention'.

    我帶遮萬一唔想濕。
    我帶遮以防萬一。

    萬一 introduces the condition (rain), not the purpose (not getting wet). To say 'just in case' as a set phrase at the end of a sentence, use '以防萬一' (ji5 fong4 maan6 jat1).

How It Connects

Tap a pattern to see what it builds on and what it leads to.

萬一Level 3In Case (Unlikely)

Learn This First

To understand 萬一 (in case / unlikely possibility), learners should already be familiar with basic conditional structures (if... then...) and the use of the future/modal marker '會'. Knowing the number '萬' (ten thousand) provides helpful etymological context for the 'one in ten thousand' chance being described.