dotard

[underpants]

a person, especially an old person, exhibiting a decline in mental faculties; a weak-minded or foolish old person.

http://www.dictionary.com/browse/dotard


Yes we are at this point.

[guillaumeb]

1. Now which prominent GOP politician does this cover?

Too many to list here.

[PA Democrat]

4. Kim Jong Un

called Trump a dotard and deranged.

[guillaumeb]

5. Hard to argue the point.

But it could also apply to many others.

[enid602]

2. Donnie

Donnie's a drooling dotard.

[Warpy]

3. Kind of a fine line, he was always a dullard

http://www.dictionary.com/browse/dullard?s=t
noun
1.
a stupid, insensitive person.


However, there were a lot less word salad and perseveration even 10 years ago.