Accentuation of monosyllabic nouns with -a and -ja endings in phraseological units and free phrases

This article studies accentological changes occurring in forms of monosyllabic nouns with -a and -ja endings in free phrases and as part of phraseological units. In particular, the study concerns a) stress shift from root to flexion in the nominative singular of the old baritone paradigm; b) stress shift from the root to the flexion in the accusative singular of the originally mobile accentual paradigm; c) stress shift from the flexion to the root in plural oblique cases of the oxytone and mobile paradigms. An analysis of data on the history of language, recommendations of orthoepic dictionaries and the results of an experiment with speakers with standard pronunciation show that these accentological processes occur at different speed in different words under study. The word forms have either completely switched to new accentuation, and the old one is not preserved even in phraseological units, or variability is noted in one of the types of context, or in both. It turned out that in cases when our experiment has revealed variability in accentuation of idiomatized word forms, accentological changes are not always reflected in orthoepic dictionaries.