big league

Noun

 * 1) A major league.

Adjective

 * 1) Major league (pertaining to the highest level of professional sports).
 * He made a real big league play.
 * 1) Major league (significant, important).

Adverb

 * 1)  To a significant degree; on a large scale.

Usage notes

 * In 2016, Donald Trump often used unusually as an adverb, rather than a noun or adjective, which was widely misinterpreted as.