adj. rud·er, rud·est
1. Ill-mannered, discourteous, or insulting: was offended by his rude behavior.
a. Undeveloped or uncivilized; primitive: a rude and savage land.
b. Crude, unfinished, or made with limited skill: a rude thatched hut.
c. In a natural, raw state: bales of rude cotton.
3. Unpleasantly forceful or harsh: faced rude winds; received a rude shock.
4. Chiefly British Vigorous or robust: in rude health.
5. Archaic Lacking education or refinement: “They were so rude and ignorant ... that very little could be learned from them” (Samuel Johnson).
[Middle English, from Old French, unrefined, harsh, from Latin rudis, in a natural state, crude, ignorant; possibly akin to rūdus, rubble; see RUDERAL.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.