REGULARITY – Purity of the gait. At walk and trot, denotes symmetry in terms of evenness of the length of the steps, levelness of the height of the steps, and equality of the time interval between the steps of the left and right forelimbs, or the left and right hind limbs. Note: In the first collective mark on a dressage test, “Gaits (freedom and regularity),” regularity is used to address purity and soundness, not to address the horse’s tempo.
Full glossary: http://bit.ly/2019USDFGlossary
