English

intercommune

From inter- + commune.

Proto-Indo-European *h₁én ‘in’

Proto-Indo-European *h₁entér ‘between’

Proto-Italic *n̥ter ‘between’

Latin inter ‘between’

Proto-Indo-European *mey- ‘to change’

…

Latin commūne ‘community, state’

Medieval Latin commūnia

Old French comune

Middle English commune

Today it means

adj between communes

Language periods are conventional ranges, not dates for this word.

Etymograph / intercommune