English

indefective

From in- + defective.

Proto-Indo-European *h₁én ‘in’

Proto-Germanic *in ‘into’

English in-

Late Latin dēfectīvus ‘imperfect, defective’

Old French defectif

Middle English defectif

Today it means

adj Not defective; perfect; complete.

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

Etymograph / indefective