mid-15c., innovacion, "restoration, renewal," from Late Latin innovationem (nominative innovatio), noun of action from past-participle stem of innovare "to change; to renew," from in- "into" (from PIE root *en "in") + novus "new" (see new). Meaning "a novel change, experimental variation, new thing introduced in an established arrangement" is from 1540s.
innocent
innocently
innocuous
innominable
innovate
innovation
innovative
innovator
innovatory
innuendo
Innuit