Simple past tense and past participle of further.(verb)
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Use "furthered" in a sentence
"Making progress in Iraq, namely furthered its plans for the West Qurna-1 field; working with South Oil Company to restore and enhance recovery from this field; establishing offices in country; and selected to lead a concept selection study for a large scale seawater supply system."
"We sort of had that but it was a matter of getting it down in length and making sure that each scene was sort of lyrical and had the right feel but also told you information and kind of furthered the story."
"For me, personally, the Junos never really seemed like something that kind of furthered what I was doing."