WHOOSH

exclamation, [noun] [C usually singular] [informal] - a soft sound made by something moving fast through the air or like that made when air is pushed out of somethingWhoosh, the doors closed automatically behind them.The train sped through the station with a whoosh.(figurative) They expect a whoosh (= a lot in a short time) of money to flood into the country.(figurative) No sooner had she arrived than, whoosh (= suddenly), she was off again.