helpfulness

from WordNet (r) 3.0 (2006)

helpfulness
    n 1: the property of providing useful assistance
    2: friendliness evidence by a kindly and helpful disposition
       [syn: {kindliness}, {helpfulness}]

from The Collaborative International Dictionary of English v.0.48

Helpful \Help"ful\, a.
   Furnishing help; giving aid; assistant; useful; salutary.
   [1913 Webster]

         Heavens make our presence and our practices
         Pleasant and helpful to him!             --Shak.
   -- {Help"ful*ly}, adv. -- {Help"ful*ness}, n. --Milton.
   [1913 Webster]