expression, i-adjective
Describes a person who has firm intentions and does not easily give in to others' opinions or pressure.
彼女は意思が強いから、一度決めたことは最後までやり遂げる。
She is strong-willed, so she sees through whatever she decides to the end.
意思が強い人は、周りに流されにくい。
A determined person is not easily swayed by others.