A male who débuts, or appears for the first time.(noun)
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Use "debutant" in a sentence
"We therefore introduce the KEEPSAKE as a claimant for some portion of the protection freely awarded to other individuals of the family, of which our debutant is the youngest, and, we trust, not the least deserving member."
"Another debutant is a first group of participants from Antarctica: the Davis Research Station, which is home to several dozen scientists who presumably will not be also switching off their heaters in -10 degrees Celsius."
"Genelia D'Souza: This perky actress can't really be called a debutant since she made her first Bollywood movie in 2003."