Simple past tense and past participle of down.(verb)
That has been brought down(adjective)
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Use "downed" in a sentence
"Now I know a man who is actually _in_ it, and he _says_ -- and he knows this for a _fact_ -- that from the _moment_ when the _first man_ downed tools -- from the very moment when he _downed tools_ ... ""
"At Moscow, Safin downed Paul-Henri Mathieu 7-6 (7-3), 6-3, 6-2 to win it for Russia."
"He called the downed U.S. drone in Iran "a significant intelligence loss" and said he thinks the administration should have considered going in and "taking out the drone.""