What is the X in X-mas?
1520s, "to enthrall with charm," from Late Latin captivatus, past participle of captivare "to take, capture," from captivus (see captive). Literal sense (1550s) is rare or obsolete in English, which uses capture (q.v.). Latin captare "to take, hold" also had a transferred sense of "to entice, entrap, allure." Related: Captivated; captivating; captivatingly.