Meaning

adjective acting or moving or capable of acting or moving quickly

adjective (used of timepieces) indicating a time ahead of or later than the correct time

adjective at a rapid tempo

originEtymology tree Proto-Germanic *fastuz Proto-West Germanic *fast Old English fæst Middle English fast English fast 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 faster From fast (“refrain from eating”) + -er.

Etymology from Wiktionary, CC BY-SA 3.0