Dictionary

ineffective

adjective in·ef·fec·tive \ˌi-nə-ˈfek-tiv\

: not producing or having the effect you want : not effective

Full Definition of INEFFECTIVE

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
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First Known Use of INEFFECTIVE

1649
INEFFECTIVENESS Defined for Kids

ineffective

adjective in·ef·fec·tive \ˌi-nə-ˈfek-tiv\

Definition of INEFFECTIVE for Kids

:  not having the desired effect <The medicine was ineffective.>
in·ef·fec·tive·ly adverb

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