10 letters · 16 points in Scrabble
adjective not subject or susceptible to change or variation in form or quality or nature
adjective unvarying in nature
adjective remaining the same for indefinitely long times
originEtymology tree English change Proto-Indo-European *lewh₁- Proto-Indo-European *lewHs-der. Proto-Germanic *leusaną Proto-Germanic *lausaz Proto-Germanic *-lausaz Proto-West Germanic *-laus Old English -lēas Middle English -les English -less English changeless From change + -less.
Etymology from Wiktionary, CC BY-SA 3.0