No, the word capable is not an adverb.The word "capable" is an adjective.
more capable, most capable
The closest noun form of capable is capacity. If you are capable of (let us say) building boxes, then you have the capacity to build boxes.
Capable of being easily led, taught, or managed; docile; manageable; governable; as, tractable children; a tractable learner., Capable of being handled; palpable; practicable; feasible; as, tractable measures.
You had not taken that into account. Would be the grammatically correct version of that sentence.
"Capable of"
"Capable of"
That is the correct spelling of "proficient" (capable, qualified).
The grammar appears correct even though it is heard more like, "He is capable of doing this job."
I don't understand the question. Perhaps you mean; "Is anyone capable of writing a coherent, intelligible and grammatically-correct question?"
It is a more politically correct way to say handicapped.
Programmable is the correct spelling (something that is capable of being programmed).
The correct spelling is "estimatable." It means capable of being estimated or calculated.
capabilities is correct. Usually if your computer doesn't underline the word after you've spelled it and pressed the space bar you could assume you have spelled it correctly. Unless of course you have written another word by mistake.
You mean is the word NEGOTIABLE correct? Yes, it's 100% correct. Nice work.
You spell it like this: ingenious. Hope this helps!
the ureters are capable of peristalsis like that of the gastrointestinal tract