資料來源 : pyDict

無效

資料來源 : Webster's Revised Unabridged Dictionary (1913)

Ineffectiveness \In`ef*fect"ive*ness\, n.
   Quality of being ineffective.

資料來源 : WordNet®

ineffectiveness
     n : lacking the power to be effective [syn: {ineffectualness}, {ineffectuality}]
         [ant: {effectiveness}]