Where does “subsumptive” come from?

subsumptive (English) comes from English -ive, from Middle English -yf, from Old French -if, from Latin -īvus, from Proto-Indo-European -iHwós, from Proto-Indo-European -wós — Creates adjectives from verb stems.

subsumptive (English): Relating to, or containing, a subsumption

Definitions

Relating to, or containing, a subsumption

Ancestry of “subsumptive”, step by step

Step	Language	Word	Meaning
1	English	-ive	An adjective suffix signifying relating or...
2	Middle English	-yf	A suffix designating adjectives, adverbs and...
3	Old French	-if	-ive
4	Latin	-īvus	Adjective suffix
5	Proto-Indo-European	-iHwós	—
6	Proto-Indo-European	-wós	Creates adjectives from verb stems

Every word from Proto-Indo-European -wós →Every word from Latin -īvus →Every word from English -ive →