formidable Copy link Outline 1. grăvis, e (most gen. term)2. formīdŏlōsus (fraught with danger and alarm)3. formīdābĭlis, e (to be dreaded4. expr. by ger. part. of mĕtuo, tĭmeo, formīdo • formidable: 1. grăvis, e (most gen. term): a f. foe to the empire, g. adversarius imperii, Cic. Off. 3, 22, 86: a more f. enemy, gravior hostis, Liv. 10, 18, med.: f. wars, g. bella, Cic. Rep. 1, 40: the f. Persians, g. Persae, Hor. 2. formīdŏlōsus (fraught with danger and alarm): a most f. war, bellum formidolosissimum, Cic. in Pis. 24, 58: Sall. Join: horribilis ac formidolosus, Cic. Clu. 3, 7. 3. formīdābĭlis, e (to be dreaded: rare, and chiefly poet.): Ov.: Gell. 4. expr. by ger. part. of mĕtuo, tĭmeo, formīdo: as, f. on account of thine unerring shaft, metuendus certa sagitta, Hor. Od. 1, 12, 24 (v. to fear); or by tĭmor, formīdo, and a verb: what appears f. to some is despised by others, *quae alteri timori sunt [timorem injiciunt] ab altero contemnuntur: v. fear (subs.).