Subdialect (from Latin sub-, "under", and Ancient Greek διάλεκτος, "discourse") is a linguistic term designating a dialectological category between the levels of dialect and idiolect. Subdialects are basic subdivisions of a dialect. Subdialects can be divided further, ultimately down to idiolects. Normally subdialects of one dialect are quite close to each other, differing mainly in pronunciation and certain local words.
- Joseph R. Applegate, "Phonological Rules of a Subdialect of English", Word, vol. 17/2 (1961), p. 186-193.
- Asta Leskauskaite, "The Periphery Subdialects of Southwestern Lithuania and the Slavic Languages", Acta Baltico-Slavica, 30 (2006), p. 391-402.