I'm far less than

Exactly.

tinanam0102I'm far less likely to believe Peter than I DO Sam.

Hi Avangi,

Thanks.
Have a good day!
TN

I'm far less likely to believe Peter than I am Sam.
I'm far less likely to believe Peter than I do Sam.

They both seem possible to me. The concern can be avoided, of course, with this:

I'm far less likely to believe Peter than Sam.

Hi Mister Micawber,

Oh now I see what you all are talking about. I understand your advice and I probably would use that in future to avoid confusion. But just for my understanding, what is the I am and I do in their full sentence form?

Thanks
TN

While MM is sleeping, here is my unwanted 2 cents...
For more likely / Far less likely are the extreme opposite in term of usage. With regard to your sentence, these are possible:
1- I am more likely to believe Sam than I do Peter (Do refers to the verb "believe")
2- I am more likely to believe Sam than I do Peter( Am -refers to "I am...")
3- I am less likely to believe Peter than