1) Determined or obstinate 2) Resolute 3) Resolute, determined 4) Strong-willed 
• (a.) Having a vigorous mind; esp., having or affecting masculine qualities of mind; -- said of women.
Strong'-mind`ed adjective Having a vigorous mind; esp., having or affecting masculine qualities of mind; -- said of women. -- 
[adj] - having a determined will 2. [adj] - marked by vigorous independence of thought and judgment
strong-willed adjective having a determined will
having a forceful and independent mind. · determined or obstinate; strong-willed.