ineffectual
US /ˌɪn.ɪˈfek.tʃu.əl/
UK /ˌɪn.ɪˈfek.tʃu.əl/
1.
not producing any or the desired effect
:
•
The efforts to clean up the oil spill were largely ineffectual.
•
His leadership was ineffectual, leading to many problems.
not producing any or the desired effect