9 letters · 16 points in Scrabble
noun position 80 in a countable series of things
adjective the ordinal number of eighty in counting order
originFrom earlier eighteth, from Middle English eightetithe, eiȝtetithe, eiȝtithe; equivalent to eighty + -eth. For the modern form, see the etymological notes at twentieth.
Etymology from Wiktionary, CC BY-SA 3.0