English

equinecessary

From equi- + necessary.

Old Latin aiquos

Latin aequus ‘equal’

English equi-

Latin necesse ‘unavoidable’

Latin necessārius ‘unavoidable’

Old French necessaire

Middle English necessarye

Today it means

adj Necessary or needful in the same degree.

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

Etymograph / equinecessary