the world > relative properties > kind or sort > individual character or quality > the quality of being specific > [adjective] > a particular or certain (4)
Certain (taken individually).
Designating an individual member of a class or group; a particular ——, an individual ——. Esp. with reference to a time or occasion.
Used to define things which the mind definitely individualizes or particularizes from the general mass, but which may be left without further…
some certain: some particular, some…which might be particularized. Obsolete.