English

deactivate

Deactivate comes from English activate.

attested reconstructed ? uncertain or disputed

Earlier history not traced here.

Lineage

A compound of de- + activate

Latin dē ‘of; from’

English de-

Proto-Indo-European *h₂eǵ-

…

Latin āctīvus ‘active’

Old French actif ‘active’

Middle English actyf ‘active, reactive’

English active

verb to make something inactive or no longer effective

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