Manual transmission whining noise when decelerating

gearbox noise when decelerating
humming noise when accelerating and decelerating
humming noise when decelerating
manual transmission noise goes away when clutch pressed
manual transmission whining noise when acceleratingloud noise when decelerating
manual transmission bearing noise
groaning noise when decelerating

Its not unusual for one to whine only under deceleration load, but it generally means something is worn out if it gets loud. It may also mean Worn Clutch and/or Flywheel: If you drive a manual transmission, there's the possibility that your clutch is worn out and/or your flywheel needs to be