7 letters · 14 points in Scrabble
adjective highly significant or important especially bringing about or marking the beginning of a new development or era
originEtymology tree English epoch Proto-Indo-European *h₂el-der.? Proto-Italic *-ālis Latin -ālisbor. Old French -albor. ▲ Latin -ālis Old French -elbor. ▲ Latin -ālisbor. Middle English -al English -al English epochal From epoch + -al.
Etymology from Wiktionary, CC BY-SA 3.0