1. Not corrupted by contact or association
   "there is no culture uncontaminated by contact with the outside world" 
2. Free from admixture with noxious elements; clean
   - unpolluted

See also: pure

Antonym: contaminated

• rounded
• roundedness
• roundel
• roundelay
• rounder
• rounders
• roundhead
• roundheaded
• roundhouse
• rounding
• rounding error
• roundish
• roundly
• roundness
• roundsman
• roundtable
• roundup
• roundworm
• roup
• Rous
• rouse
• rouseabout
• rouser
• rousing
• Rousseau