They, more than any other part of speech, have preserved the proto-Slavic case system.

The first volume was published in 1788 and describes the proto-Slavic era.

It is supposed that all syllables were open in the Proto-Slavic language.

Gimbutas goes so far as identifying it as the proto-Slavic homeland.

The word derives from the proto-Slavic nora 'pit, hole, abyss'.

It was during this period that his studies in the Proto-Slavic and Celtic languages began.

Alternatively, the name may be derived from a Proto-Slavic word for "family member", compare 'serbs'.

The Czech language developed from the Proto-Slavic language at the close of the 1st millennium.

A postulated proto-Slavic word for "bear", cognate with arctos and ursus.

For some others, the Common Slavic period comes after Proto-Slavic rather than including it.

The Proto-Slavic vowel jat has changed over time, coming to be pronounced differently in different areas.

The latter ethnonym can be originated from a reconstructed Proto-Slavic world for "multitute".

The Proto-Slavic language existed until around AD 500.

This leads some scholars to believe there was a proto-Slavic divinity or demon called Baba, associated with bad weather.

These are very strong indications that Perun was indeed the supreme god of the original Proto-Slavic pantheon.

During the late Proto-Slavic period, a pattern emerged in these vowels which characterised a yer as either "strong" or "weak".

Dual grammatical number was a feature of the Proto-Slavic language which has been retained by Slovene.

The language was a descendant of the Proto-Slavic language and faithfully retained many of its features.

In its early stages, the language of Carantanian Slavs was essentially Proto-Slavic.

Others, instead have labelled the neighbouring Milogradi or Lusatian cultures as proto-Slavic.

The name is derived from the ancient Proto-Slavic word pir, meaning "banquet" or "festivity".

It developed from the Proto-Slavic language in the 10th century and is mutually intelligible with the Slovak language.

However, the name is very ancient, indicating that Svarog was a deity of the Proto-Slavic pantheon.

The long Ijekavian reflex of Proto-Slavic jat is of disputed status.

The Proto-Slavic supine was used after verbs of motion, but it was replaced by the infinitive.

This makes it difficult to identify a single point at which Proto-Slavic broke up into regional dialects.

However, Proto-Slavic was still operating under the system of syllabic synharmony.

After the three palatalizations of Proto-Slavic, dialectal variation became more apparent.

It was during this period that his studies in the Proto-Slavic and Celtic languages began.

For some others, the Common Slavic period comes after Proto-Slavic rather than including it.

The main language was Proto-Slavic.

For a long time there have been investigators who believe that the number of loanwords from Iranian languages in Proto-Slavic is substantial.

Here is a list of words which are generally held to be Germanic loanwords in Proto-Slavic:

The oldest changes in Proto-Slavic were common to all West-Slavic dialects.

Little is known of the language of the Carantanians, but it can be supposed that it was still very close to Proto-Slavic.

This has been cited as evidence by many scholars as an argument for the later influence of Iranian languages on Proto-Slavic.

Some Slavic languages are noticeably more conservative than others, hence better at revealing the original state of Proto-Slavic.

Part of this was maintained in Proto-Slavic in the distinction between aorist and imperfect in the past tense.

The Slavic autonym is reconstructed in Proto-Slavic as Slověninъ.

The development into Proto-Slavic probably occurred along the southern periphery of the Proto-Balto-Slavic continuum.

It is likely that either Old Church Slavonic or the protolanguage Proto-Slavic is intended.

The Goths are the first Germanic people who can be proved to have had intensive contacts with speakers of Proto-Slavic.

It is believed that the name Sytykhiv is derived from the Proto-Slavic name Sebetikh.

Vowel nasality in Polish is preserved from Proto-Slavic, having been lost in most other modern Slavic languages.

Before the split there was some kind of dialect continuum, on whose outskirts existed an innovative dialect that was ancestral to Proto-Slavic.

The following table shows the main classes of verbs in Proto-Slavic, along with their traditional OCS conjugation classes.

Many researchers believe that this change actually occurred throughout Proto-Slavic and was later reversed in West Slavic, by analogy with related word forms lacking the lateral.

The supine was used in Proto-Slavic but it was replaced in most Slavic languages by the infinitive in later periods.

These vowels underwent reduction and were eventually deleted in certain positions in a word the early Slavic languages, beginning from the late dialects of Proto-Slavic.

The following table lists various consonant alternations that occurred in Proto-Slavic, as a result of various suffixes or endings being attached to stems: