rud

rud · noun, verb¹

1. Proto-Indo-European · inherited from*h₁rudʰéh₁ti
2. Proto-Germanic · inherited from*rudāną
3. Old English · inherited fromrudian“to be ruddy”
4. Middle English · inherited fromrudden
5. English todayrud

From Middle English rudden, ruden, from Old English rudian (“to be ruddy”) (compare rudu (“redness”)), from Proto-Germanic *rudāną, from Proto-Indo-European *h₁rudʰéh₁ti, from *h₁rewdʰ- (“red”); cognate with Old Cornish rud and Old Irish rúad). (Compare red).

RUD · noun, verb²

(explosion): Abbreviation of rapid unplanned disassembly as an initialism and an acronym