English

intermutual

From inter- + mutual.

Proto-Indo-European *h₁én ‘in’

Proto-Indo-European *h₁entér ‘between’

Proto-Italic *n̥ter ‘between’

Latin inter ‘between’

Proto-Indo-European *mey-

Latin mūt(ō)

Latin mūtuus ‘in return, in exchange, mutual, reciprocal’

Middle French mutuel

Today it means

adj Mutual.

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

Etymograph / intermutual