English
interfraternal
From inter- + fraternal.
Formed from inter- + fraternal
Proto-Indo-European *h₁én ‘in’
Proto-Indo-European *h₁entér ‘between’
Proto-Italic *n̥ter ‘between’
Latin inter ‘between’
English inter-
Proto-Indo-European *bʰréh₂tēr ‘brother’
…
Latin frāter ‘brother’
Latin frāternus ‘of or pertaining to a brother, fraternal’
Medieval Latin frāternālis
Middle French fraternel
English fraternal
Today it means
adj Between fraternities.
Language periods are conventional ranges, not dates for this word.
Etymograph / interfraternal