> Of course, if you were a teenager, you might well say the first. Fun is
> used by them as an adjective too.

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Cordially,
Eric Walker, Owlcroft House
http://owlcroft.com/english/
"Fred" asked us about:
| It was so fun.
| It was so much fun.
Everyone agrees that the second one is correct.
James Silverton adds:
>> Of course, if you were a teenager, you might well say the first.
>> Fun is used by them as an adjective too.
> I believe that the colloquial use of "fun" as an adjective goes back
> rather further than modern teenagers--recalling such slogans as "a fun
> time".
I agree that it's common informal usage to treat "fun" as an adjective;
however, it tends to be an incomparable one. Many people who would
happily say "a fun time" would not say "a very fun time" or "we had a
more fun time today than yesterday". "It was so fun" has similar
implications of comparison, so some people will object to it too.
There's another possible reading of "If was so fun", and that's the
one where "so", emphasized along with the verb, is used by way of
contradicting an emphasized "not". That is, "It *was so* fun" could
simply mean "It *was* fun", uttered in contradiction of someone else's
claim that it was *not* fun. I associate this usage specifically with
small children. (And since I rarely encounter them today, I don't
really know if it's still a current usage.)

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Mark Brader, Toronto | "You often seem quite gracious, in your way."
msb@vex.net | --Steve Summit
My text in this article is in the public domain.