"Bigly" was the LAAP-dog media's attempt to smear President Trump as a dummy. He was actually saying "big league" as if to suggest that something was very important or would take a major effort to accomplish.
-PJ
Correct. Many of us grew up hearing about the minor leagues where pro athletes get their start, before they move on to the big leagues. So it became a phrase to indicate something very important or high level to call it “big league.” But the mainstream news/entertainment media, never one to give Trump a fair chance or even the benefit of the doubt, reported it as “bigly.” It’s not and never was.