στυγνάζω

(στυγνός, sombre, gloomy, sullen, Isa.5:17, Wis.17:5, Dan LXX 2:12*), [in LXX: Eze.27:35 28:19 32:10 (שָׁמֵם)* ;]

to have a sombre, gloomy appearance: of the human countenance (RV, his countenance fell), Mrk.10:22; of the sky (so στυγνότης, Polyb. iv, 21, 1), Mat.16:3 ([WH], R, mg. om.).†

(AS)

to have a sombre, gloomy appearance; his countenance fell