What is the difference between backwards, backward, and backwardly? They're all adverbs, but I feel like there's some sort of difference in their meanings and uses.
Although this question is similar to ""Backward" versus "backwards" -- is there any difference?", that particular question doesn't mention "backwardly".
in a reverse or contrary direction or way
towards the direction that is opposite to the one in which you are facing or opposite to the usual direction:
towards the direction that is the opposite to the one in which you are facing:
Meanwhile, Merriam-Webster defines backwardly as an adverb but provides no examples of usage that I can see.
Are all three terms interchangeable? Is there any difference in meaning between the three sentences below?
- She glanced backward over her shoulder.
- She glanced backwards over her shoulder.
- She glanced backwardly over her shoulder.
Since "backwards" and "backward" are the same and just different variants (UK and US, respectively), I am mainly interested inhow they differ from "backwardly", which has its own, separate entry in the Cambridge Dictionary.