English

interfacility

From inter- + facility.

Proto-Indo-European *h₁én ‘in’

Proto-Indo-European *h₁entér ‘between’

Proto-Italic *n̥ter ‘between’

Latin inter ‘between’

Proto-Indo-European *dʰeh₁- ‘to put, do’

…

Latin facilis ‘doable, easy’

Latin facilitās ‘ease, facility’

Middle French facilité

Middle English facilite

Today it means

adj Between facilities

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

Etymograph / interfacility