Writing a rhetorical piece for my high school english class, I wanted to emphasize the sheer increase from 10 million to approximately 2 billion.

Conveniently, 10 million is 200 times smaller than 2 billion. That makes a nice, clean number to work with, even though it really doesn't have any significance on the quesiton I'm asking here.

What I wanted to do is to say something like this:

two hundredfold


two hundred-fold

Just as


means two times as many. The pattern appears to be placing the number before fold like threefold, fourfold, fivefold, etc.

Yet, with something like two hundred, how should I space, hyphenate and spell it correctly?

Just wondering because I'm a little ocd about this and would like to get it right.

closed as general reference by aedia λ, Robusto, simchona, user2683, Daniel Sep 28 '11 at 0:27

This question is too basic; it can be definitively and permanently answered by a single link to a standard internet reference source designed specifically to find that type of information. If this question can be reworded to fit the rules in the help center, please edit the question.


@Mike's answer is simply wrong. Firstly because hundredfold is not a noun, it's an adjective/adverb, and secondly because the correct form for two of them is two hundredfold, for which there are over 1700 written instances in that link (and not a single one for the pluralised version).

Note that in principle the -fold suffix can be attached to any number term, and it's irrelevant if that term includes spaces, as in two hundred. I don't think anyone would ever write one hundred and forty-fourfold, but it would be valid.

But it's worth noting that hundredsfold is valid, because although it's imprecise, hundreds is a valid number term.


"Two hundredfolds" is not correct, and "hundredfold" is not a noun. From NOAD:

-fold |fəʊld|
forming adjectives and adverbs from cardinal numbers:
1 in an amount multiplied by: threefold.
2 consisting of so many parts or facets: twofold.

For example, in the film The Big Lebowski, the big Lebowski tells The Dude:

And with Brandt as my witness, tell you this: Any further harm visited upon Bunny, shall be visited tenfold upon your head.

So words using "hundredfold" follow the same pattern.

  • Thanks for the clarification and explanation, didn't realize the answer I accepted was incorrect. – Qcom Sep 28 '11 at 22:51

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