RADIOACTIVE /ˌɹeɪdioʊˈaktɪv/ Scrabble 17 Words With Friends 19 Scrabble letter values: R1A1D2I1O1A1C3T1I1V4E1 = 17 Definition adjective exhibiting or caused by radioactivity. Examples “radioactive isotope”“radioactive decay”“radioactive fallout” See all 466 words you can make from RADIOACTIVE → 11-letter words Words starting with R Words ending with E ← Unscramble different letters