true blue /ˌtɹuː ˈbluː/adjective 7noun 3forms 1 adjective7 •Steadfastly faithful or loyal; unwavering in loyalty; staunch, true.He was a true blue supporter, and would not listen to what he supposed to be the lies of the opposition. •Patriotic. •Representing the true essence of something; authentic, genuine, honest.Some upscale, service-oriented dealers say competitors are installing the third-party disk drives in PC XTs and passing them off as true blue PC XTs. — 1985 •(Australia, informal) Representing authentic Australian culture, values, etc. •(UK) Of or pertaining to the (historical) Tory, and now the Conservative, political party; hence, steadfastly conservative.[…] Mr. Wenham himself was a staunch old True Blue Tory, and his father a small coal-merchant in the north of England […] — 1847 •(UK) Aristocratic by birth. •(Scotland, historical) Of or pertaining to the Scottish Presbyterian or Whig political party in the 17th century; hence, steadfastly Presbyterian.This was a tough true-blue presbyterian, called Deans, who, though most obnoxious to the Laird on account of principles in church and state, contrived to maintain his ground upon the estate […] — 1818 noun3 •A faithful partisan or supporter of a cause, person, political party, etc. •A precisely defined pure blue, as for example web color #0000FF = RGB(0,0,255). •(historical) A blue dye from Coventry, England, famous for not washing out. formstrue blues