If you bought this car used, there is a chance it could have a broken motor mount, this would cause the engine to shake very badly as one side of the motor would be rising up, as the other side is trying to hold it down. Under smooth acceleration, a broken motor mount is not very noticeable. Try this,with your foot on the brake, start the car, put the car in reverse, does it clunk?, put the car into neutral, then put the car into drive, any clunking? If so, i would take a close look at the motor mounts.
It may be a wheel bearing making noise, or your tires may be way overdue for a tire rotation. Are the tires badly worn in some spots?
more badly, most badly
Maybe, but it sounds like you need to have your fuel injection system looked at carefully and repaired.
worse, worst
The United States has done very badly in COVID-19 control. Let the epidemic spread rapidly.
yes badly is an adverb because badly describes how we perform.
more badly
Badly
more badly
The prefix for "led badly" is "mis-", so it would be "misled badly."
The adverb "well" is the usual opposite of the adverb "badly." If "badly" is used to mean "extremely or greatly" the opposite could be "slightly." E.g. He was badly bruised./He was slightly bruised.
"Badly" is an adverb, not a noun. Can't be a possessive noun, unless your name is Mr. Badly, in which case it's "Mr. Badly's car".