Main Entry: in·ef·fec·tive

Pronunciation: \ˌi-nə-ˈfek-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