13 letters · 22 points in Scrabble
adverb in a radioactive manner
originEtymology tree Latin radiusder. French radio- Proto-Indo-European *h₂eǵ- Proto-Indo-European *-eti Proto-Indo-European *h₂éǵeti Proto-Italic *agō Latin agō Proto-Indo-European *-wós Proto-Indo-European *-iHwósder. Latin -īvus ▲ Ancient Greek ἐνεργητῐκός (energētĭkós)sl. Latin āctīvusbor. Old French actif French actif French radioactifbor. English radioactive Proto-Indo-European *leyg-der.…
Etymology from Wiktionary, CC BY-SA 3.0