13 letters · 18 points in Scrabble
noun someone who attends a convention
originEtymology tree English convention Proto-Indo-European *-yósder. Proto-Italic *-āzijos Latin -āriusnom. Latin -ārius Old French -ier Middle French -ierder. English -eer English conventioneer From convention + -eer.
Etymology from Wiktionary, CC BY-SA 3.0