"... to counter the leftist/progressive nincompoopishes arguments."
Should have used a comma after "leftist/progressive" to separate the 3 adjectives.
Let me correct it and tell me if it's still wrong.
First off I should not have made nincompoopish plural.
"... to counter the leftist/progressive, nincompoopish arguments."
All three adjectives, leftist/progressive and nincompoopish describe the noun arguments.
How does it look now?
Perfect! Don't change a thing!
I don't belong here.
I don't understand grammar.
:-(
Ohman. Now my HEAD hurts!