Definition of know-nothingism in English:

know-nothingism

noun

See know-nothing

‘Quite a few conservatives responded to the widespread put-downs of his intelligence by embracing literal know-nothingism.’
  • ‘His song is a predictable piece of vaguely Christian know-nothingism.’
  • ‘Most of these volumes preached the most ridiculous styles of know-nothingism.’
  • ‘His faith is far more sincere and far more deserving of respect than the brain-dead know-nothingism of the fundamentalists.’
  • ‘Though at first glance, the prospects that trustees and alumni donors can recall the universities from their descent into narcissistic know-nothingism look grim, donors nevertheless have two possible levers for change.’