The word I am looking for is not pleonasm (it stresses to much on the redundancy of the chosen words, i.e. fewer words would suffice). It is not verbiage (it stresses to much about the complexity of the word choices).
My opinion about the suggested words:
waffle: To speak or write at length without any clear point or aim.
This is almost the meaning I am looking for. My only objection is that the dictionaries do not seem to agree upon its meaning. For example,
- to talk or write foolishly —Webster Online
- speak or write at length in a vague or trivial manner —Oxford Online
- speech or writing that says nothing important —Cambridge Online
(Yes, they all sound similar, but to my ears there is considerable difference.)
doublespeak: the quoted meaning below sounds "too evil," as there seems to be deliberate/conscious evil intentions
gobbledegook: sounds too much like the speaker has no idea as to what he is talking about.
Had "waffle" universally been agreed to have the above meaning. I'd opt for it.