tour de force

plural tours de force

1. A feat demonstrating brilliance or mastery in a field.

   Now orbiting Earth, Gravity Probe B is a technological tour de force.

   1 more example

   Much as I admire Wilson’s tour de force—I wish people would read it more and read about it less—my hackles have always risen at the entirely false suggestion that his book influenced mine.

   1976, Richard Dawkins, The Selfish Gene, Kindle edition, OUP Oxford, published 2016, page 429