linguist and formulator of Verner's law, which provided convincing evidence of the regularity of sound change in the historical development of languages. His law was a decisive influence in establishing the direction taken by the Neogrammarian school of historical linguists (see Neogrammarians (Neogrammarian)).

Verner's important contribution to linguistic studies was Verner's law, which appeared in Zeitschrift für vergleichende Sprachforschung in 1875. From 1876 until 1882 Verner worked in the library of the University of Halle. In 1883 he was appointed reader in Slavic linguistics at the University of Copenhagen; he was promoted to professor in 1888.