backwards
adv. placeadv. moving toward the back instead of the front. You can also use it to describe doing something in the opposite order of how it usually happens.
adv. moving or directed toward the rear; in a reverse direction or order from the usual one.
He took a few steps backwards to see the whole picture.
The car rolled slowly backwards down the driveway because the driver forgot to pull the handbrake.
The investigator had to work backwards from the evidence found at the scene to reconstruct the events leading up to the accident.
From backward + -s. See also -s (“used in the formation of certain adverbs: backwards, downwards, inwards, etc.”).
From Middle English bakwardis, bakwardis, a variant of Middle English bakwarde, bakward (“backward”). Equivalent to backward + -s. Compare Saterland Frisian bäkove (“backwards”).
An inflection.
In British English, 'backwards' is the standard adverbial form, whereas 'backward' is more common in American English.
He walked backwardlyHe walked backwardsThe word 'backwards' is already an adverb; adding '-ly' is a common error as it is not a valid English word.