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

• echocardiogram
• echocardiograph
• echocardiography
• echoencephalogram
• echoencephalograph
• echoencephalography
• echoey
• echogram
• echography
• echoic
• echoing
• echolalia
• echoless
• echolike
• echolocation
• echovirus
• echt
• Eck
• Eckhart
• eclair
• eclampsia
• eclectic
• eclectic method
• eclectically
• eclecticism