Source : Webster's Revised Unabridged Dictionary (1913)

Feckless \Feck"less\, a. [Perh. a corruption of effectless.]
   Spiritless; weak; worthless. [Scot]

Source : WordNet®

feckless
     adj 1: not fit to assume responsibility
     2: generally incompetent and ineffectual; "feckless attempts to
        repair the plumbing"; "inept handling of the account"
        [syn: {inept}]