Third-person singular simple present indicative form of legitimize.(verb)
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Use "legitimizes" in a sentence
"The No. 22 next to their name legitimizes their 5-1 start, but they know it doesn't signal their arrival."
"I wish you would decide what "legitimizes" your stance."
"And it also -- by the way, it helps that -- going that way only kind of legitimizes Republicans in arguing that they need to try and stop that, you know, and gives them a little cover rather than saying they're obstructionists, because they can say --"