adj.
Pronunciation: ˌ i-n ə - ' fek-tiv
Function: adjective
Date: 1649
1 : not producing an intended effect : INEFFECTUAL < ineffective lighting>
2 : not capable of performing efficiently or as expected : INCAPABLE <an ineffective executive>
– in · ef · fec · tive · ly adverb
– in · ef · fec · tive · ness noun