affrightening,ppl.a.arch.|əˈfraɪtənɪŋ| [f. affrighten + -ing2.] Frightful, terrifying. 1683Pennsylv. Arch. I. 61 Yt affrightening cruelty committed at Lewis.1715Burnet Hist. own Time (1766) II. 108 All the affrightening stories that had been brought him.