A way to describe something with huge change.
The growth of our sales increased bigly.
How Donald Trump's hands are not sized.
His hands were less bigly sized than any other man of his build.
A word used by that person named Donald Trump, may be a synonym of largely
We are going to start winning bigly in trade. -Donald Trump, 2016.
something not achieved to its fullest potential, not great, failed in a big way
I did bigly on that test. That plan is bigly