Words related to rude
"of a dull red color, reddish-brown," 1781, from Latin rufus "red, reddish, tawny, red-haired," from an Osco-Umbrian cognate of Latin ruber "red" (from PIE root *reudh- "red, ruddy"). Mostly in names or descriptions of birds or other animals; sometimes frowned upon in early use as just a French word for "reddish." Related: Rufulous.
"insolent person, boisterous fellow," 1560s, a mock surname from rude + -by, common ending element in place-names (and thus surnames), as in Grimsby, Rigby, Catesby. Similar formations in idlesby "lazy fellow" (1610s), sneaksby "paltry, sneaking fellow" (1570s), suresby (16c.), lewdsby (1590s), nimblesby (1610s).
1540s, "element or first principle of a science or art," from French rudiment (16c.) or directly from Latin rudimentum "early training, first experience, beginning, first principle," from rudis "unlearned, untrained" (see rude).
The sense of "anything in an undeveloped state" is by 1560s. Related: Rudiments.