 In 1919, he published a dictionary of 2000 novelty words.His principles (utility, aesthetics and native quality) were summarized in "Keeleuuenduse äärmised võimalused" (Extreme Perspectives of Language Innovation; Tartu, 1924).Language innovation slowly died away after the 1927 act that made it compulsory for schools to teach standard Estonian as put down in Estonian Orthographic Dictionary (1925, chief editor J. V. Veski) and Estonian Grammar (by Elmar Muuk, 1927).