What is the X in X-mas?
late 14c., "a predilection, portent, omen," from fore- + verbal noun from bode. Meaning "sense of something bad about to happen" is from c.1600. Old English forebodung meant "prophecy."
"feel a secret premonition," c.1600, from fore- + bode. Related: Foreboded; foreboding. Old English forebodian meant "to announce, declare."