9 letters · 17 points in Scrabble
originFrom steam + -punk, by analogy with cyberpunk, coined by science-fiction writer Kevin Wayne Jeter (born 1950) in a 1987 letter to the magazine Locus in response to a review of his book Infernal Devices published the same year (see the quotation below).
Etymology from Wiktionary, CC BY-SA 3.0