Ruddy
来自Big Physics
late Old English rudig, from the base of archaic rud ‘red colour’; related to red.
wiktionary
From Middle English ruddy, rody, rudi, from Old English rudiġ(“reddish; ruddy”), from rudu(“redness”), equivalent to rud(“redness”) + -y. Compare Icelandic roði(“redness”).
The British slang sense expressing irritation is presumably a euphemism for bloody.
etymonline
ruddy (adj.)
Middle English rudi, from late Old English rudig "reddish, of a red color," of the complexion, "rosy, healthily red," probably from rudu "redness," which is related to read "red" (from PIE root *reudh- "red, ruddy"). As a British slang euphemism for bloody (q.v.), it is recorded by 1914. Related: Ruddiness.
