thereafter \(ˈ) ̷ ̷| ̷ ̷ ̷ ̷\adverb Etymology: Middle English therafter, from Old English thǣr æfter, from thǣr there + æfter after 1.: after that < died that year, and his wife died soon thereafter > : from then on : thenceforth < thereafter he wrote only occasionally > 2.archaic: according to that : accordingly