Definition of "uneffectual" [uneffectual]

• Feeble or lacking in effect; ineffectual. (adjective)

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• "But this solemn invoking of the dead man's spirit was uneffectual."
• "In fact when the longest lasting and most sturdy of all old WTC1 tower was first bombed by the FBI back in the '90s no less than THREE CRITICAL CORE COLUMNS seriously damaged over a height of THREE crucial underground stories and a huge monumentally hotter fireball and high temperature rubber, gasoline and diesel fires that raged below amid broken and uneffectual missing sprinklers didn't even make the building above feel more than a thud!"
• "(SIC) uneffectual missing sprinklers didn't even make the building above feel more than a thud! ""