According to the Bosniak entry in the Oxford English Dictionary, the first preserved use of "Bosniak" in English was by British diplomat and historian Paul Rycaut in 1680 as Bosnack, cognate with post-classical Latin Bosniacus (1682 or earlier), French Bosniaque (1695 or earlier) or German Bosniak (1737 or earlier).[32] The modern spelling is contained in the 1836 Penny Cyclopaedia V. 231/1: The inhabitants of Bosnia are composed of Bosniaks, a race of Sclavonian origin.[33] In the Slavic languages, -ak is a common suffix appended to words to create a masculine noun, for instance also found in the ethnonym of Poles (Polak) and Slovaks (Slovák).
For all da bitches and naysayers out there ;-)