Tom is a very/much fun person to be with.

[diamondcutter]

1. Tom is a very fun person to be with.
2. Tom is a much fun person to be with.
(By me.)

I’d like to know which sentence is correct.

 

[teechar]

#1 is possible; #2 is wrong. Note that "fun" in that sense is AmE (and probably spreading to other varieties too).

 

[Tarheel]

The first one is not only correct but much used. Don't use the second one.

 

[emsr2d2]

#1 is possible; #2 is wrong. Note that "fun" in that sense is AmE (and probably spreading to other varieties too).

It's commonly used in BrE and always has been.

 

[Tdol]

Tom is great fun to be with. (We can guess that he's a person)

 

[teechar]

It's commonly used in BrE and always has been.

That is incorrect.
"Fun" has not always been used as an adjective, including in BrE.
Otherwise, you'd readily and commonly see usage of "funner" and "funnest".

The word "fun" started off as a noun, and its use as an informal adjective spread relatively recently.

Is Funner a Word: Funner or More Fun? - Writing Explained

Is funner a real English word? What about funnest? How do you form the comparative and superlative? Find out with example sentences and quizzes here.

writingexplained.org

"Fun, Funner, Funnest"? - DAILY WRITING TIPS

Several readers have asked for a post about the use of fun as an adjective.

www.dailywritingtips.com

The Grammarphobia Blog: Fun, funner, and funnest

www.grammarphobia.com

I still maintain that it's AmE that drove that particular use, given that it's more widespread in that variety. Compare, for example, the BrE and AmE ngrams for "a fun person".

 

[emsr2d2]

That is incorrect.
"Fun" has not always been used as an adjective, including in BrE.

I should have said that it has been used that way during my lifetime.