What are the best answers for “lacking the power to be effective”?

ineffectiveness, ineffectuality, ineffectualness.

How many letters does the top answer for “lacking the power to be effective” have?

The most common answer is ineffectiveness (15 letters).

3 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

ineffectiveness 15 letters wn-def

lacking the power to be effective

ineffectuality 14 letters wn-def

lacking the power to be effective

ineffectualness 15 letters wn-def

lacking the power to be effective

lacking power or ability 50% similar → impotent