Synonyms for Commingle:

n.

admix, stir, assemble. commingle (noun)
coalesce, blend, meld, merge, combine, flux, fuse, conflate, immix, mix.

v.

blend (verb)
merge, combine.

Other synonyms:

admix. stir. mix
blend, admix.
Other relevant words:
admix, stir, assemble.