exclusively

adv

1. (focus)to the exclusion of anything or anyone else; solely or entirely

   “These new shoes are made exclusively out of recycled cardboard.”

   “Every photographer of experience has his own theories and methods of working, but for the last 14 years I have used a Leica exclusively, and have found it best adapted to the somewhat exacting demands of railway photography, which is by no means an easy branch of the art.”

   “For instance, the little bush moa fed nearly exclusively on forest vegetation, whereas the heavy-footed moa was a grazer in open vegetation habitats.”