Having a vigorous, independent will

Obstinate; strong-minded; unyielding to the desires, concern or opinions of others. / Possessing self-will; determined to pursue one's own desires or adhere to one's own opinion..

Showing ill will.

(idiomatic, law) A decision in bad faith to avoid becoming informed about something so as to avoid having to make undesirable decisions that such information might prompt.

plural of mutual will

plural of mirror will

plural of joint will

Synonym of willful ignorance

Extremely strong-willed

As much as one wishes to achieve something, the frailties of the human body often make it impossible.