1. (

• ineffective ,
• uneffective ,
• ineffectual ,

) not producing an intended effect; "an ineffective teacher"; "ineffective legislation" ;

2. (

• futile ,
• ineffectual ,
• otiose ,
• unavailing ,
• meaningless

) producing no result or effect; "a futile effort"; "the therapy was ineffectual"; "an otiose undertaking"; "an unavailing attempt" ;

3. (

• ineffective ,
• ineffectual ,
• unable

) lacking in power or forcefulness; "an ineffectual ruler"; "like an unable phoenix in hot ashes" ;