8 letters · 10 points in Scrabble
adjective located farthest to the rear
originEtymology tree English rear Proto-Germanic *-umô Proto-Indo-European *-yōs Proto-Indo-European *-tHós Proto-Indo-European *-istHos Proto-Germanic *-istaz Proto-Germanic *-umistaz Old English -mest Middle English -mest ▲ Middle English [Term?]influ. Middle English -most English -most English rearmost From rear + -most.
Etymology from Wiktionary, CC BY-SA 3.0