WordWeb Online

1. Socially incorrect in behaviour
   - ill-mannered, bad-mannered, unmannered, unmannerly
    
2. (of persons) lacking in refinement or grace
   - ill-bred, bounderish [Brit, archaic], lowbred, underbred, yokelish
    
3. Lacking civility or good manners
   - uncivil
    
4. (used especially of commodities) being unprocessed or manufactured using only simple or minimal processes
   "bales of rude cotton"
   - natural, raw
    
5. Belonging to an early stage of technical development; characterized by simplicity and (often) crudeness
   "the crude weapons and rude agricultural implements of early man"
   - crude, primitive
    
6. [Brit] Good and vigorous
   "in rude health"

Sounds like: rood, rued

Derived forms: ruder, rudest

See also: civility, early, impolite, rudely, rudeness, unprocessed, unrefined

Encyclopedia: Rude