Harmful or destructive:
Causing danger; ready to do harm or injury.
Being in physical motion:
Of or relating to energy.
Close to a successful solution or conclusion:
Find another word for radioactive. In this page you can discover 22 synonyms, antonyms, idiomatic expressions, and related words for radioactive, like: poisonous, contaminated, irradiated, dangerous, active, energetic, nonradioactive, hot, radioactivity, toxic and null.