eft·soons \(ˈ)eft|sünz\adverb alsoeft·soon\-ün\ Etymology: Middle English eftsones (from eft + sone immediately, soon + -s, adverbial suffix) & eftsone, from eft + sone — more at soon, -s 1.archaic: a second time : again 2.archaic: soon afterward : quickly 3.archaic: from time to time : often