1620s, "to mix together, blend" (intransitive), from com- + mingle. Also see comingle. Transitive sense attested by 1840. Related: Commingled; commingling.
His book commingles sarcasm and sadness
commercial
commercialism
commercialization
commercialize
Commie
commingle
comminute
commiserate
commiseration
commissar
commissariat