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The Rest Is Science

How Many Words Do You ACTUALLY Know?

10 Jun 2026

Transcription

Transcript generated automatically by AI and may contain errors.

Chapter 1: What is the main topic discussed in this episode?

1.313 - 10.006 Hannah Fry

Welcome to The Rest of Science. I'm Hannah Fry. And I'm Michael Stevens. Today is an episode of Field Notes, where we have discovered something made by you.

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Chapter 2: How can you measure your vocabulary size?

10.026 - 26.168 Hannah Fry

And not just all of you, but one of you named Jake. I don't know the last name. I don't know the last name either. Didn't provide it. But what I will say is Jake is an absolute legend. Yeah, maybe Jake wants to be a little bit anonymous, but his website should not be anonymous. Absolutely not.

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26.188 - 43.369 Hannah Fry

Inspired by a discussion we had on a previous episode about how many words does a person know and how many words are there to know, he looked into it and made a website that tests how many words you know. It estimates the size of your vocabulary. Certainly does. That's what we're going to get into today.

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49.745 - 52.531 Michael Stevens

This episode is brought to you by Cancer Research UK.

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52.872 - 73.232 Hannah Fry

Here's something strange. Your DNA contains more ancient viral fragments than genes. The genes that build our cells make up only 2% of our DNA. And for years, that is what scientists focused on. They treated the rest, the ancient viruses and stuff, as junk.

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73.252 - 83.465 Michael Stevens

But now we know that that hidden majority, sometimes called the dark genome, influences how our biology works and how diseases like cancer behave.

83.726 - 102.607 Hannah Fry

It's a reminder that progress rarely comes as a single breakthrough. It builds gradually. Cancer Research UK plays a central role in that progress, supporting decades of research into over 200 types of cancer, work that's helped double survival in the UK over the past 50 years.

102.827 - 113.518 Michael Stevens

For more information about Cancer Research UK, their research breakthroughs, and how you can support them, visit cancerresearchuk.org forward slash the rest is science.

121.531 - 144.095 Hannah Fry

OK, so the website is called Vocab Owl, which looks like vocab bowl, like Super Bowl. Yeah, it's a little bit competitive. Vocable. It's vocable. It's very fun. And you and I have both done it. We don't know each other's scores. Basically, you just go through and you're shown words and then you have a multiple choice challenge. Which of these four is the definition of this word?

144.135 - 147.439 Hannah Fry

And you go on like that for what, like 100 words? Yeah, 100 words.

Chapter 3: What is the Vocab Owl and how does it work?

337.803 - 347.734 Michael Stevens

Also, bluntly, I just quite like you. So, you know, I don't think it would be... I might tease you in jest. Just rib you around the edges a little here and there.

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347.814 - 348.415 Hannah Fry

No, it's fine.

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348.856 - 350.318 Michael Stevens

Yeah. I like you too.

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350.759 - 356.629 Hannah Fry

However, let's compare our vocabs. Okay, deal. According to Jake's vocab owl.

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356.929 - 371.355 Michael Stevens

Vocab owl. Okay. What are we saying? Do you want the number I got correct out of? No, I want the estimated number of words you know. Okay. 73,400. 73,400. Don't look at me like that. What was yours?

372.136 - 402.283 Hannah Fry

72,250. Wow. Wow. Okay, congratulations. Congratulations to you. All right. Well, that's a lot of words. So you know a thousand more words than me, approximately. What are they? Who knows? Probably British ones like chim-chim-chree and... I don't know them. Jiminy Cricket. I know Jiminy Cricket. I like that. I say that when I'm upset. Jiminy. I say Jiminy Christmas. I got 10 words wrong.

402.517 - 425.047 Hannah Fry

I got nine wrong. Oh, but maybe we got them wrong in different parts. I think that's what it is, because the way the website estimates your vocabulary is by saying, OK, in the English language, there are this many words that are of intermediate difficulty or intermediately known. And if you only know two thirds of them, then you only know two thirds of those words. Of the wider corpus.

425.167 - 438.83 Hannah Fry

I missed more from lower down the chain. Yeah, you must have done. And fewer up at the top, but there's fewer to know at the top. So you have a larger vocabulary than me. But I think maybe I'm lopsided.

439.071 - 442.395 Michael Stevens

I think you've been reading too many of the scrumdiddlyumptious.

Chapter 4: What surprising words did Hannah and Michael discover?

523.443 - 543.954 Hannah Fry

Laconic. Laconic. I said, oh, that means being lazy and slow. But no, it means using very few words. Yeah. Did you know that? I think I did know that one. Yeah, I bet you did. Laconic is a great one. It is a good word. Like, oh, the way she describes things is so laconic. No wasted words. Just... Okay. Should I go through what I've missed or should we trade?

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544.435 - 549.343 Michael Stevens

I don't have a full list of them. I'll be honest with you. I found the test quite painful. I don't like getting things wrong.

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549.363 - 566.387 Hannah Fry

Yeah. Well, me neither. Actually... No, I did like getting them wrong. I mean, look at me. I've written them all down and I've put them into sentences and I'm like, I'm not going to get these wrong again. So I'll share my list. Yeah, go on. OK, lugubrious. Lugubrious. I got that one wrong. Now, I've heard the word before.

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566.407 - 585.636 Hannah Fry

I decided that it means looking or sounding happy or gay, but it means looking or sounding sad and dismal. I think I got that one wrong as well, you know. Oh, really? Lugubrious. So that's a sad way to be. Ah, his lugubrious pose.

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585.656 - 591.064 Michael Stevens

You can really tell in the way that you're saying it. When you say lugubrious, it sounds like it's got the opposite definition.

591.084 - 601.477 Hannah Fry

All the children with their lugubrious play. But no, lugubrious play would be very sad. Okay, unctuous. I got that one wrong.

602.119 - 613.311 Michael Stevens

Well, can I just tell you, this one, I also got this one wrong, but I actually got this one wrong particularly because I was sitting next to producer Lauren, who was like, oh... It means delicious.

614.232 - 640.135 Hannah Fry

Apparently not. It means excessively or irritatingly flattering. That is cool. I would not have guessed that. I guess that it meant dry and rough and rude. Unctuous. Oh, this drink is unctuous. But no, to be unctuous means to be like a salesperson is unctuous. They're like, oh, you have such great tastes and oh, this is, you know what's good. And it's just, oh, stop being so flattering.

640.295 - 666.343 Hannah Fry

I was a bit unctuous earlier when I told you I liked you. you said it not me and now we all understand it this one is the one that I wish I'd not missed innervate right innervate it does not mean to cause someone to be filled with energy it means the opposite it means to cause someone to feel drained of energy that's a tricky one that is a tricky one is you would

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