What is the best word for next after willingness?
Examples:
* "I have _hard_ willingness to learn"
* "I have _big_ willingness to learn"
* "I have _strong_ willingness to learn"

For mean like "I really like and want to learn more"

Question

What is the best word for next after willingness?
Examples: 
* "I have _hard_ willingness to learn"
* "I have _big_ willingness to learn"
* "I have _strong_ willingness to learn"

For mean like "I really like and want to learn more"

Answer

I'd say "I have a strong willingness to learn".

Answer

I wouldn't use 'willingness'. In conversation I'd say
'I'm really keen to learn' or
'I really want to learn'
:)

Answer

A strong willingness to learn.

Answer

"Big willingness" and "hard willingness" sound comical and even childish. I guess "strong willingness" is a collocation you have to learn... like many others.

Answer

"Willingness" is not used so much in conversation, as the previous comments have stated. From what I can tell, you are trying to increase the sophisticated nature of your writing, which is a great idea!  I'll write some sentences below that mean similar things to what you are saying:

I have a strong desire and passion to learn more. (Common wording for what you are saying)
 
I have immense alacrity to learn more. (Alacrity is not a word that the majority of people know. Only use this is more academic environments.  You could also replace alacrity for "fervor.")

My suggestion: "I have a strong desire to learn more." This is the most common and understood.

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