Simple past tense and past participle of buttress.(verb)
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Use "buttressed" in a sentence
"It helps to remember that in the early 1960s, before the Stonewall Nation, feminists, and anti-colonial guerillas rose up to fight for pride and empowerment, abject depictions of women, queers and the colonized were still the default expression buttressed by law and religion."
"Still, it wasn't until I'd passed through the "buttressed" spruce, which marks the unofficial entrance to OSI, and walked the hundred yards or so to a fallen tree upon whose trunk sits a red stone - the very square inch itself - that I apprehended just how privileged I was to be having the experience."
"As these groups immigrated to America, religion flowed naturally out of their ethnic heritage, while ethnicity buttressed their religion."