The word 'originative' is correct and usable in written English.
It is an adjective meaning having the ability to create or being creative and original in thinking. Example: The artist's work was hailed as truly originative, showcasing a unique style and approach to painting.
Titania is called an intensifier activator because it increases the host-crystal luminescence, whereas a substance that produces luminescence not exhibited by the chemically pure host crystal is called an originative activator.
In psychology, James's work is of course dated, but it is dated as is Galileo's in physics or Charles Darwin's in biology because it is the originative matrix of the great variety of new developments that are the current vogue.
It was as if some deeper level of his being had been tapped: his life as an originative thinker began in earnest.
Although he distinguished between ideas of sensation and ideas of reflection, the thrust of his efforts and those of his empiricist followers was to reduce the latter to the former, to minimize the originative power of the mind in favour of its passive receptivity to the sensory impressions received from without.
In Crescas's opnion, free will, in the sense of an originative cause that is itself uncaused, to decide and act does not really exist.
For this, one needs an "originative act of consciousness" that goes beyond mere passivity and compares it in order to apprehend its definite character.
Consequently, its own originative activity accrues to thinking, that is, insofar as it is a principle, the dynamics of its principiating: principiare.
As he remarks: "What is originative is the caesura that establishes the distance between reason and non-reason; reason's subjugation of non-reason, wresting from it its truth as madness, crime, or disease, derives explicitly from this point" (Foucault 1965, x).
