Antonyms of adj radioactive

1 sense of radioactive

Sense 1
radioactive (vs. nonradioactive) -- (exhibiting or caused by radioactivity; "radioactive isotope"; "radioactive decay"; "radioactive fallout")

nonradioactive (vs. radioactive) -- (not radioactive)

Similarity of adj radioactive

1 sense of radioactive

Sense 1
radioactive (vs. nonradioactive) -- (exhibiting or caused by radioactivity; "radioactive isotope"; "radioactive decay"; "radioactive fallout")
       => hot -- (having or dealing with dangerously high levels of radioactivity; "hot fuel rods"; "a hot laboratory")