9 letters · 10 points in Scrabble
noun a driver who follows too closely behind another motor vehicle
originEtymology tree English tailgate Proto-Indo-European *-yósder. Proto-Italic *-āzijos Latin -āriusnom. Latin -āriusbor. Proto-Germanic *-ārijaz Proto-West Germanic *-ārī Old English -ere Middle English -ere English -er English tailgater From tailgate + -er.
Etymology from Wiktionary, CC BY-SA 3.0