I would say that the person is possibly "prevaricating however it's important to note that this implies some evasiveness behind the "ums and ers"

For a non-evasive verb I would probably go with "umming and ahhing" as it's clearly understandable. There are technical terms for it - but they don't really describe it very well!

I would say that the person is possibly "prevaricating". However, it's important to note that this implies some evasiveness behind the "um"s and "er"s.

For a non-evasive verb, I would probably go with "umming and ahhing", as it's clearly understandable. There are technical terms for it - but they don't really describe it very well!