Source : Webster's Revised Unabridged Dictionary (1913)

Ineffective \In`ef*fect"ive\, a. [Pref. in- not + effective: cf.
   F. ineffectif.]
   Not effective; ineffectual; futile; inefficient; useless; as,
   an ineffective appeal.

         The word of God, without the spirit, [is] a dead and
         ineffective letter.                      --Jer. Taylor.

Source : WordNet®

ineffective
     adj 1: not producing an intended effect; "an ineffective teacher";
            "ineffective legislation" [syn: {uneffective}, {ineffectual}]
            [ant: {effective}]
     2: lacking in power or forcefulness; "an ineffectual ruler";
        "like an unable phoenix in hot ashes" [syn: {ineffectual},
         {unable}]
     3: lacking the ability or skill to perform effectively;
        inadequate; "an ineffective administration"; "inefficient
        workers" [syn: {inefficient}]