Simple past tense and past participle of undergird.(verb)
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Use "undergirded" in a sentence
"Indeed, it is harder to identify purely secular progressive movements in American history than to find progressive movements infused with deep religious commitment and undergirded by religious institutions."
"Behind this is a stereotyped view of what groups actually get stereotyped: But there are millions of stereotypes out there - from place to place and culture to culture; and I suspect that many of them are undergirded by magical thinking - in the Middle East, in South Central, etc."
"Rather, the issue is that while conservative foreign policy is undergirded by a clear ideological commitment to violence and nationalism, progressive foreign policy tends to be quite muddled."