11 letters · 19 points in Scrabble
adjective impossible to break especially under ordinary usage
originEtymology tree Proto-Indo-European *né Proto-Indo-European *n̥- Proto-Germanic *un- Proto-West Germanic *un- Old English un- Middle English un- English un- Proto-Indo-European *bʰreg-der. Proto-Germanic *brekaną Proto-West Germanic *brekan Old English brecan Middle English breken English break Proto-Indo-European *-tḗr Proto-Indo-European *-dʰlom Proto-Indo-European *-dʰlis Proto-Italic *-ðlis…
Etymology from Wiktionary, CC BY-SA 3.0