powerless UK /ˈpaʊələs/US /ˈpaʊɚləs/ adjective3 •Lacking sufficient power or strength.“Imagine the growing regrets, the longing to escape, the powerless disgust, the surrender, the hate.” — 1899 •Lacking legal authority.The traffic warden was powerless to stop me driving away. •Without electricity or electrical power.During the storm, the entire neighborhood was left powerless for several hours formsmore powerless · most powerless