Origin: Latin suffix -ive
Ineffective has 4 different meanings across 1 category:
not producing an intended effect
"an ineffective teacher"
"ineffective legislation"
lacking in power or forcefulness
"an ineffectual ruler"
"like an unable phoenix in hot ashes"
lacking the ability or skill to perform effectively; inadequate
"an ineffective administration"
"inefficient workers"
not having the desired effect; ineffectual
"The new marketing campaign was ineffective because sales continued to drop despite the heavy advertising budget."