Traitorize comes from traitor + -ize; traitor is from Old French traitor, from Latin trāditor ('one who hands over, betrayer'), from trādere ('to hand over'). The historical chain includes Latin trāditor and Latin trādere. The quoted older senses, "one who hands over, betrayer" and "to hand over", supply the semantic anchors for traitorize. The formation is best read as suffixal and borrowed: the word traitorize carries its older form-history into a compact English lexical shape. In present English it is used as a verb, "to act the traitor toward; to betray". Related English forms include traitor, traitorous, treason, and betray. The result is a verb whose etymology preserves both the older form and the later English specialization.