Source : Webster's Revised Unabridged Dictionary (1913)

Profitless \Prof"it*less\, a.
   Without profit; unprofitable. --Shak.

Source : WordNet®

profitless
     adj : without profit or reward; "let us have no part in profitless
           quarrels"- D.D.Eisenhower; "How weary, flat, stale, and
           unprofitable / Seem to me all the uses of this world"-
           Shakespeare [syn: {unprofitable}]