Where does “unify” come from?

Unify comes from Old French unifier, derived from Late Latin unificare, combining Latin unus (one) with facere (to make), ultimately from Proto-Indo-European dʰeh₁-.

unify (English): Cause to become one; make into a unit;...

Definitions

Cause to become one; make into a unit;...

Ancestry of “unify”, step by step

Step	Language	Word	Meaning
1	Middle French	unifier	—
2	Late Latin	unificare	—
3	Latin	facere	present active infinitive of faciō; do, make; to...
4	Latin	facio	I do; I make, construct, fashion, frame, build,...
5	Proto-Italic	fakjō	to make
6	Proto-Italic	*θakjō	—
7	Proto-Indo-European	*dʰh₁k-yé-ti	—
8	Proto-Indo-European	dʰeh₁-	to do, put, place

Words derived from “unify”

unification
reunification
unifier
reunify
unifiable
unificationist
Unificationist
preunification
disunification
Unificationism
antiunification
disunify
nonunifiable
ununifiable
antireunification

Every word from Proto-Indo-European dʰeh₁- →

unify — Etymology, Origin & Word History | Etymology Explorer