Ge-nípan

According to the Old English Dictionary:

ge-nípan

p. -náp, pl. -nipon; pp. -nipen. I. to darken, become dark; cālīgāre, obnūbĭlāri :-- Hú seó þrag gewát, genáp under niht-heltn, swá heó nó wǽre how the time has passed, has darkened under the veil of night, as if it had not been, Exon. 77 b; Th. 292, 8; Wand. 96. II. to rise as a cloud, to creep up or come suddenly upon one; obrēpĕre, sŭpervĕnīre alĭcui :-- Him ongén genáp atol ýþa gewealc the terrible rolling of the waves rose as a cloud against them [came suddenly upon them], Cd. 166; Th. 206, 20; Exod. 454. ge-nipan