purposefulness
noun /ˈpɜːpəsflnəs/
  /ˈpɜːrpəsflnəs/
[uncountable]- the fact of having a useful purpose; behaviour that shows a clear aim and determination目的明确的;有目的的;目标清晰而坚定的 - He moves with the purposefulness of a hunting cat.他像一只猎狗一样有目的地移动。 
 
- He moves with the purposefulness of a hunting cat.