OVERCAST Copy link • OVERCAST 1. To cloud over: the sky is overcast, caelum nubibus obducitur or obtegitur; nubilatur; or nubilare coepit. Anybody’s brow is overcast (figuratively), alicujus oculi tristitiae quoddam nubilum ducunt (Quint., 11, 3, 75). To coat with anything, Vid: COAT. 2. adj., Of the sky, etc., nubilus: obnubilus. Of the countenance: an overcast brow, frons contracta (wrinkled with care, vexation, etc.): frons nubila (Mart., 2, 11); vultus tristis.