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Should "arbitrary" suffice on its own, or does it make sense to include "any?"

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up vote 4 down vote accepted

If you leave out the any in that sentence, you could be talking about a known set of criteria that happen to be arbitrarily selected. Add it, and you are broadening the scope to include criteria that are not specific, germane, or qualified in some way.

My Webster's defines arbitrary as

based on random choice or personal whim, rather than any reason or system

I suspect you may be worried that arbitrary may mean the same thing as any, but it does not. There is no sense of randomness to the term any; it only expresses a degree of inclusiveness.

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Adding "any" to "arbitrary" also adds alliteration as well as two metric feet to the phrase, which may make it more pleasing when said aloud. – John Satta Jan 15 '11 at 21:27

It makes very little difference, but I would remove the 'any' as it sounds awkward. Or if you choose to keep the any, remove the arbitrary as 'any' includes the meaning of arbitrary to an extent to which arbitrary can be reasonably removed.

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