9 letters · 14 points in Scrabble
originEtymology tree Latin sulpur Latin sulfur Latin sulphur Anglo-Norman sulfrebor. Middle English sulphur English sulfur Ancient Greek -ο- (-o-)der. Latin -o-bor. English -o- English sulfo- New Latin ammōniumbor. English ammonium English onium English sulfonium From sulfo- + onium.
Etymology from Wiktionary, CC BY-SA 3.0