13 letters · 18 points in Scrabble
verb rid of contamination
originEtymology tree Proto-Indo-European *de Proto-Indo-European *-h₁ Proto-Indo-European *déh₁ Proto-Italic *dē Latin dē Latin dē-der. English de- English contaminate English decontaminate From de- + contaminate.
Etymology from Wiktionary, CC BY-SA 3.0