The origin of the Proto-Indo-European comparative suffix (with Turkic and Uralic parallels)

The article deals with the origin of the Proto-Indo-European comparative suffix. It is claimed that the morpheme in question, reconstructed here as * -i̯ōs < * -i̯o-os , evolved in predicatively used * -s- stem nominals. It is also claimed that the first component of the complex * -i̯o-os is the allomorph * -i̯o- of the verbal suffix * -i̯e/o- . Both intrasystemic and typological parallels indicate that the verbal component could originate from intransitive change-of-state verbs. It is suggested that the ablaut varieties of the comparative suffix and the frequent predesinential extensions are due to independent inflectionalization in various post-Proto-Indo-European dialects.