In linguistics, Illič-Svityč's law refers to two Proto-Slavic rules, named after Vladislav Illich-Svitych who first identified and explained them.

Neuter ''o''-stems

Proto-Slavic neuter ''o''-stems with fixed accent on a non-acute root (accent paradigm b) become masculine, retaining the accent paradigm. Compare: * PIE ''n'' > OCS ''dvorъ'' ''m'' * PIE *médʰu ''n'' 'mead' > PSl. *medu ''m'' (OCS ''medъ'') This rule is important because it operated after the influx of Proto-Germanic/Gothic thematic neuters, which all became masculines in Proto-Slavic. Late Proto-Germanic (after the operation of Verner's law) had fixed accent on the first syllable. Compare: * PSl. *xlaiwu ''m'' 'pigsty' (OCS ''xlěvъ'' ) < PGm. ''n'' * PSl. *xūsu/xūzu ''m'' 'house' (OCS ''xyzъ'') < PGm. ''n'' * PSl. *pulku ''m'' 'folk, people' (OCS '' plъkъ'') < PGm. ''n''

Masculine ''o''-stems

Proto-Slavic masculine ''o''-stems with fixed accent on a non-acute root (accent paradigm b) become mobile-accent (accent paradigm c). This change is also termed "Holzer's metatony", after linguist Georg Holzer who described it. Older literature suggests that this was not a Common Slavic innovation, and that there are exceptions in some Croatian Čakavian dialects of Susak and Istria, which have retained the original accentuation. This has been recently disputed.Vermeer 2001



* * Willem Vermeer (2001). ''Critical observations on the modus operandi of the Moscow Accentological School'', Werner Lehfeldt, Einführung in die morphologische Konzeption der slavischen Akzentologie, 2d edition, München: Sagner, pp. 131–161. {{DEFAULTSORT:Illic-Svityc's law Category:Proto-Slavic language Category:Sound laws