1. Not radioactive

Antonym: radioactive

• enteric fever
• enteric-coated aspirin
• enterics
• entering
• enteritis
• enterobacteria
• Enterobacteriaceae
• enterobiasis
• Enterobius
• Enterobius vermicularis
• enteroceptor
• enterokinase
• enterolith
• enterolithiasis
• Enterolobium
• Enterolobium cyclocarpa
• enteron
• enteropathy
• enteroptosis
• enterostenosis
• enterostomy
• enterotomy
• enterotoxemia
• enterotoxin
• enterovirus