"ineffective" in the adjective sense
1. ineffective, uneffective, ineffectual
not producing an intended effect
"an ineffective teacher"
"ineffective legislation"
2. ineffective, ineffectual, unable
lacking in power or forcefulness
"an ineffectual ruler"
"like an unable phoenix in hot ashes"
3. ineffective, inefficient
lacking the ability or skill to perform effectively inadequate
"an ineffective administration"
"inefficient workers"
Source: WordNet® (An amazing lexical database of English)
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