9 letters · 13 points in Scrabble
adjective not liable to failure
adjective always able to supply more
adjective unceasing
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- English failing English unfailing From un- + failing.
Etymology from Wiktionary, CC BY-SA 3.0