So, how large is it?

[FigTree]

32,100.
I'm currently drowning in grad seminar readings and feeling a little bitter about people (looking at you, theorists) using $10 words when a $2 word will do, so I'm not mad at it!

[TyCaine]

39,200
Not bad for a native, though displaced, Brit...

http://testyourvocab.com/result?user=8291954

[Sahariel]

33,200. I think my score's improved.

[calculatedrisks]

27,200.00

Not bad if I say so myself.

[wander]

Mine is 27,500.

I was honest and also somewhat more strict on myself. Some words I use though I honestly am unsure on a true definition, so those ones I didn't tick. The last page had a few I've never even seen, let alone used. ^^;

[DelightfullyMAD]

I got 33,700 for mine.  Some of the words I knew on the list actually made me feel sort of embarrassed that I knew them, since some are pretty much never used in any sort of conversation or even most literature, but apparently I'm the kind of nerd who likes knowing weird and obscure words :P

[Left Palm of Saint Michae]

Wow, you guys are great!

I thought I knew English pretty well for a foreigner, but damn...  9,650 words? How come I'm even able to understand all of you?

[persephone325]

I just wanted to see what the number would be if someone knew all the words listed.

Your total vocabulary size is estimated to be:
45,000 words

Some of you are pretty close to that mark, actually.

[bloodysands]

My total vocabulary size is estimated to be:
24,700 words.

[AxiomUltimatum]

I got 26,100.

[Cample]

I got
17,800

not too surprised, always add issues with communication and writing/spelling

[Bernardo Hoagie]

25,800 words. A decent enough amount, all that matters is how well you use your vocabulary in literature.

[Maeriel]

29,400 sheesh I thought it would be less with being a foreigner. Cool link :)

[dimeadozen]

28,200 words, which I guess puts me just above the 70th percentile for my age. I've really let my vocabulary slip in relation to my peers, but I'm not the kind of guy to whip out a thesaurus when I write, so I'm pretty happy with my vocabulary. I think I know enough varied words to keep my writing from getting repetitive, but not so many that I'm tempted to show off. (Not that those with larger vocabularies all show off, but it's something I would probably do.) I also feel like having too large of a vocabulary hinders communication rather than helping it, since one can unknowingly use words that the listener doesn't understand in the slightest. I've had that happen on rare occasions, mostly with foreigners, but sometimes even with fellow native-born Americans.

[HoodedStranger]

I took the test and got:

25,200 words

Being a carnivorous reader of fictional literature, I'm disappointed in my overall vocabulary score. I know that I was being honest though and genuinely only picking the words that I knew the meaning of off the top of my head without consulting a dictionary or thesaurus. I think I might have picked maybe one-three words out of the very last column if any.

[Outcast]

39,600

Aided greatly by reading a lot of history concerning cultures speaking a number of different English dialects; roleplaying (I probably wouldn't have picked up things like 'caitiff' outside the hobby!); and reading 19th and early 20th century fiction.  Even so, there were words I can't remember ever seeing in print before, let alone ones for which I couldn't dredge up a definition.

I found the detailed write-up fascinating - particularly the observation that those who take the test seem to be a self-selecting elite, falling into the top couple of percentiles of the broader population (at least within the US).  It sems that merely taking the test is a near-guarantee of having a far-above-average vocabulary.

[Caelia]

20,300 words for me as a native English speaker.

May I just say, a few of those words on the last page did not even look to be English.

[Cognitive Brainfart]

20,700 words.

I'm actually kind of disappointed in myself. I had hoped it would be more. But I suppose it's not that terrible. I'm from an Eastern European country where young people know some English at best and the regular adult or elder doesn't know it at all. I've learned most of it from television, music, games, and rp.

[FreeElk]

29,000 - 70th percentile for my age.

I wonder if there is a marked difference between people here on E and the average - I would expect so. We all probably read quite a bit.

[Magicaddict]

36,800 - for a thirty-five year old, that doesn't sound so bad.

[CrystalMaeGranger]

I got
17,800

not too surprised, always add issues with communication and writing/spelling

That the exact score I got. I don't think its too bad.
I think some people cheated,

[Hush]

20,900 - not much of a reader and when writing Im a dictionary / thesaurus kinda gal

[frost rose]

Oh, I recall this test. My girlfriend is very into these sorts of things, since her academic background is in linguistics, and vocabulary size, language acquisition, and dialect are kind of her jam. There's a cool dialect locator for Americans that's super neat as well.

This test estimates my vocabulary at 42 300. Although I'm not sure if that's entirely fair. At least one word I just analysed and managed to define off the top of my head from the latin roots. (Uxoricide in particular. Never run across it, but it's obvious from the derivation.)

[Luna333]

I got 22400. Not bad!

[Caeli]

32,900

It makes me feel like I should use the dictionary more often when I'm reading on my Kindle. ;D