Dossier is a noun.
"Dossier" is masculine in French. So it is "un dossier."
The Miernik Dossier was created in 1973.
Dossier Journal was created in 2008.
The newspaper revealed that the FBI was compiling a dossier on Reverend King. There was nothing in his dossier that suggested the suspect had committed the crime.
Dossier K. was created on 2009-12-09.
A Praed Street Dossier was created in 1968.
The James Bond Dossier was created in 1965.
Lucent Dossier Experience was created in 2004.
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The part of speech for this particular word is a noun.
part of speech
(dossier basically means "a file which contains information regarding a subject or person") The police had amassed a sizable dossier on the master criminal. She realized that the detective she had hired was compiling a dossier on her as well.