"Anzu wyliei" had a toothless beak, a prominent crest, long arms ending in slender relatively straight claws, long powerful legs with slender toes, and a very long tail. In life, the animal was about to long and to in weight. It was one of the largest known oviraptorosaurs and the largest known from North America (though the giant Mongolian oviraptorosaur "Gigantoraptor" was far larger).