---
title: "How to pronounce \"thirder\" in English | SayItVid"
description: "Learn how to say \"thirder\" correctly. Watch real-life video examples and master your English pronunciation with SayItVid."
image: "https://img.youtube.com/vi/XeSu9fBJ2sI/hqdefault.jpg"
url: "https://sayitvid.com/pronounce/thirder"
---


# How to pronounce "thirder" in English

## Pronunciation & Phonetics

- **IPA**: `/θɪrdɛr/`
- **Syllable Breakdown**: **thir·der**

## Meaning & Usage

### NOUN
- With regard to the Sleeping Beauty problem: one who argues that the probability of heads is 1/3.

### Example Sentences
- "The thirder would say Canada but I would almost certainly say Brazil. I mean why should I give any weight to what the researcher would have"
- "This is known as the thirder position Now I know it seems wrong to suggest that a Fair coin should have a one-third probability of coming"

### Common Phrases
- thirder position

## Real-Life Native Speaker Examples (4 Video Clips)

Listen to native speakers pronounce "thirder" in real conversation:

### Example 1
> "and now you're woken up. Who do you think won the game? The thirder would say Canada but I would almost certainly say Brazil. I mean why should I give any weight to what the researcher would have done if Canada had one when I'm fairly confident that they won't?"
- **Watch at 7:10**: [YouTube](https://www.youtube.com/watch?v=XeSu9fBJ2sI&t=430s)

### Example 2
> "So the probability that the coin came up heads is one-third. This is known as the thirder position Now I know it seems wrong to suggest that a Fair coin should have a one-third probability of coming up heads but that's because the question she's asked is subtly different. The implied question is: "Given you're awake, what's the probability that the coin came up heads?" And that is one-third"
- **Watch at 3:13**: [YouTube](https://www.youtube.com/watch?v=XeSu9fBJ2sI&t=193s)

### Example 3
> "I mean if you reach into a bag of one white marble and a million black marbles, what are the chances that you pull out that one white marble? I was pretty convinced by this and I considered myself a thirder but this same argument is used to convince people that we're living in a simulation. The thinking goes that our computing technology has improved so dramatically, even over just the last 40 years, that we can imagine a time in the not-too-distant future when we can create a completely realistic simulation of our world."
- **Watch at 5:30**: [YouTube](https://www.youtube.com/watch?v=XeSu9fBJ2sI&t=330s)

### Example 4
> "repeatedly asked about Canada's one victory. If you stand to win a bet by correctly answering the question then by all means you should bet on Canada. But if you want to correctly pick the winner of more of the games well then you should say Brazil. And this is what's at the heart of the dispute between Halfers and Thirders in the Sleeping Beauty problem. If you want to be right about the outcome of the coin tosses well you should say the probability of heads is a half but if you want to answer more questionings correctly well then you should say one-third. I want to leave you with one"
- **Watch at 7:51**: [YouTube](https://www.youtube.com/watch?v=XeSu9fBJ2sI&t=471s)


## How to Pronounce "thirder"

- **Syllables**: thir · der
- **IPA**: `/θɪrdɛr/`
- **Listen for**: the stressed syllable in the clips above — notice how surrounding sounds blend in natural speech.

## Frequently Asked Questions

### How do you pronounce “thirder”?
“thirder” is pronounced /θɪrdɛr/ (thir · der). Listen to the native-speaker clips above to hear it in real conversation.

### How many syllables are in “thirder”?
“thirder” has 2 syllables: thir · der.

### What does “thirder” mean?
With regard to the Sleeping Beauty problem: one who argues that the probability of heads is 1/3.

### How can I hear “thirder” used in real sentences?
This page has 4 real-world video examples of “thirder” with synchronized subtitles. Use Previous / Next (or ← / → keys) to hear each one at the exact moment it is spoken.


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