When expressing a willingness to do something, it can be helpful to have a range of synonyms to use. Some possible alternatives to "be willing to" include "be open to," "be eager to," "be ready to," "be inclined to," "be disposed to," "be prepared to," "be amenable to," "be accommodating of," "be agreeable to," "be cooperative about," and "be excited about." Each of these phrases can convey a slightly different shade of meaning, depending on the context in which they are used. Cultivating a varied vocabulary can help to make your expressions of willingness more nuanced and precise.