15 letters · 18 points in Scrabble
originEtymology tree Proto-Indo-European *h₂el- Latin ūls Proto-Indo-European *-teros? Latin -ter Old Latin -ād Latin -ā Latin ultrābor. English ultra- Proto-Indo-European *pel-der. Proto-Germanic *felląder. Proto-West Germanic *feltbor. Proto-Indo-European *-tḗr Proto-Indo-European *-trom Proto-Italic *-trom Latin -trum Latin filtrumlbor. French filtre Proto-Italic *-āzi ▲ Latin -ereinflu. Latin -āre…
Etymology from Wiktionary, CC BY-SA 3.0