لَهِجٌ بِأَمْرٍ

[ Devoted, addicted, or attached, to an affair, and keeping, attending, or applying himself, constantly, perseveringly, persistently, or assiduously, to it; intent upon it; and accustoming himself to it: particle n. of 1.] You say, رَجُلٌ لَهِجٌ بِشَىْءٍ [A man devoted, &c., to a thing]. (M in article بل.)