8 letters · 15 points in Scrabble
verb become or cause to become soft or liquid
adjective still frozen
originEtymology tree Proto-Indo-European *h₂ent- Proto-Indo-European *-s Proto-Indo-European *h₂éntsder. Proto-Germanic *anda- Proto-West Germanic *anda- Old English and- Old English on- Middle English on- English un- English thaw English unthaw English -ed English unthawed From unthaw + -ed.
Etymology from Wiktionary, CC BY-SA 3.0