discourteous or impolite, esp. in a deliberate way

a rude reply.

without culture, learning, or refinement

rude, illiterate peasants.

rough in manners or behavior; unmannerly; uncouth.

rough, harsh, or ungentle

rude hands.

roughly wrought, built, or formed; of a crude construction or kind

a rude cottage.

not properly or fully developed; raw; unevolved

a rude first stage of development.

harsh to the ear

rude sounds.

without artistic elegance; of a primitive simplicity

a rude design.

violent or tempestuous, as the waves.

robust, sturdy, or vigorous

rude strength.

approximate or tentative

a rude first calculation of costs.

adjective

kind , mannerly , nice , polite , respectful , polished , refined , sophisticated , exact , gradual , smooth

adjective

abrupt , abusive , bad-mannered , barbarian , barbaric , barbarous , blunt , boorish , brusque , brutish , cheeky , churlish , coarse , crabbed , crude , curt , discourteous , graceless , gross , gruff , ignorant , illiterate , impertinent , impolite , impudent , inconsiderate , insolent , insulting , intrusive , loutish , low , obscene , offhand , peremptory , raw , savage , scurrilous , short , surly , uncivil , uncivilized , uncouth , uncultured , uneducated , ungracious , unmannerly , unpolished , unrefined , vulgar , wild , angular , artless , callow , formless , fresh , green , inartistic , inelegant , inexperienced , inexpert , makeshift , primal , rough , roughhewn , roughly made , rudimental , rudimentary , shapeless , simple , unconversant , uncultivated , unfashioned , unfinished , unformed , unhewn , unprocessed , guessed , harsh , imperfect , imprecise , inexact , in the ballpark , proximate , sharp , startling , stormy , surmised , turbulent , unpleasant , unprecise , violent , primitive , crass , ill-bred , indelicate , philistine , tasteless , disrespectful , ill-mannered , cacophonous , discordant , disharmonious , dissonant , inharmonic , unharmonious , unmusical , awkward , bawdy , boisterous , bold , brutal , clumsy , contumelious , crusty , earthy , fierce , hoidenish , homespun , inclement , indecorous , inurbane , irreverent , jarring , lewd , natural , prurient , racy , romping , rowdy , rugged , rustic , salty , scatological , smutty , suggestive , terse , tumultuous , unbecoming , unceremonious , uncourtly , undisciplined , unladylike , unlearned , unmannered , unsavory , unskilled , untaught , untrained , unwrought