Simple past tense and past participle of sack.(verb)
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Use "sacked" in a sentence
"The Bears offense trotted back out, Mr. Umenyiora again sacked Mr. Cutler on third down and this time, when the ball came loose, Giants safety Deon Grant corralled it, giving his offense the ball on the Chicago 29."
"The point that Greenspan needs to be sacked is when he starts listening to the New York Times editorial page, which has given us Maureen Dowd, Paul Krugman, and Jayson Blair."
"Sources say the officer will appear before a police disciplinary board within months, charged with gross misconduct which carries a maximum penalty of him being sacked from the force."