Somedeal comes from Old English sum dǣl ('some part, some portion'), a compound of sum ('some') + dǣl ('part, deal, portion'). Archaic. The historical chain includes Old English sum dǣl and Old English dǣl. The quoted older senses, "some part, some portion", "some", and "part, deal, portion", supply the semantic anchors for somedeal. The formation is best read as compound and borrowed: the word somedeal carries its older form-history into a compact English lexical shape. In present English it is used as a adv, "archaic word meaning to some extent; somewhat". Related English forms include deal. The result is a adv whose etymology preserves both the older form and the later English specialization.