infamously

infamous +‎ -ly

infamously (comparative more infamously, superlative most infamously)

1. In an infamous manner.
2. Famously, known for being.
   • 2019, March 4, Michael Irving, “Doomed, rare black hole spotted near the center of the galaxy”, New Atlas:

     But black holes are infamously invisible, so they have to be observed indirectly.

Like for the adjective infamous, the use of a term meaning “disgracefully” in a neutral or even positive sense was originally done for its humorous effect but has become so common that it no longer has that effect. Many still consider the use of the term in the new sense to be abuse of language.