'Rude" - definition

'rude' (L. rudis, rough): course or rough in form and workmanship; crude, barbarous or ignorant, discourteous, unmannerly; violent, harsh; discordant; having or showing little skill, accuracy method &c.; not carefully worked out or finished ... rough, uneven, shapeless, unpolished, uncouth, inelegant, rustic, course, vulgar, clownish, raw, unskilful, untaught, illiterate, ignorant, uncivil, impolite, impertinent, saucy, impudent, insolent, surly."  

[Source: Webster's Twentieth Century Dictionary]