i Register
In some senses, intercommon is marked as obsolete, UK. Watch for register when choosing this word.
verb
To share with others; to participate; especially, to eat at the same table.
the spirits of the wine do prey upon the roscid juice of the body , and inter-common with the spirits of the body , and so deceive and rob them of their nourishment
To graze cattle indiscriminately in the commons of each other, as the inhabitants of adjoining townships, manors, etc.