• (RP) IPA: /ˌɹeɪdioʊˈaktɪv/
  • (America) IPA: /ˌɹeɪdioʊˈæktɪv/

radioactive (not comparable)

  1. Exhibiting radioactivity.
  2. (figurative, rare) Dangerous and disgusting, particularly of people or ideas.
    Even sleazy tactics and his radioactive mouth may not be able to contain this debacle.
Translations Noun

radioactive (plural radioactives)

  1. Any radioactive substance.
    • 2016, Travis S. Taylor, ‎Les Johnson, On to the Asteroid
      Any ship nearby will receive a lethal dose of gamma rays, neutrons, and other radioactives.

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