Obs. rare. [f. prec. vb.] The act of appalling; sudden shock to courage or self-possession; dismay.
1596. Chapman, Iliad, XI. 32. Had engraven, full of extreme appall, An ugly Gorgon. Ibid. (1616), Batrachom. (1858), 17. Cold appal The wretches put in rout past all returne.