He was filled with dark forebodings, feeling something bad would happen today.

forebodings 是名词 foreboding 的复数形式。foreboding 由前缀 fore-（表示"预先"）和动词 bode（预示）组成，字面意思是"预先的征兆"，指"不祥的预感"或"凶兆"。 在句中用复数形式表示强烈的、持续的不安预感。