Before the Balkan wars and World War I, the Rup dialects covered a much larger territory, including vast areas of Eastern Thrace, Western Thrace and the eastern part of Greek Macedonia. Following the wars, most of the Bulgarian population in these areas fled or resettled to Bulgaria and nowadays, the Rup dialects outside Bulgaria are spoken only by the Muslim Bulgarians in Western Thrace in Greece. Unlike the Northwestern or the Balkan dialects, the dialects included in the Rup group are not uniform and have vastly different phonological characteristics. What brings them together is the vast array of reflexes of Old Church Slavonic ѣ. Whereas the Western Bulgarian dialects have only for yat in all positions and the Balkan dialects have or, depending on the character of the following syllable, the Rup dialects feature a number of different reflexes, none of which is similar to the ones in the Western Bulgarian or the Balkan dialects. These reflexes include: in all positions, broad е in all positions, before a hard syllable and broad e before a soft syllable, broad e in a stressed syllable and normal e in an unstressed syllable, etc. etc.
Phonological and morphological characteristics
The following phonological and morphological characteristics apply to all Rup dialects:
щ/жд for Proto-Slavic / - леща, между
A large number of palatal consonants in all possible positions of the word: китки vs. formal Bulgarian китки
Soft ж, ш, ч : жаба vs. formal Bulgarian жаба. The Rup dialects are very archaic with regard to this as in all other Bulgarian dialects, these consonants have become hard and are now part of the hard consonants
Preserved consonant х in all positions: ходи
Widespread labialisation of ' into ': йуме vs. formal Bulgarian име
Transition of the consonant group -дн into -нн: гланна vs. formal Bulgarian гладна
Division of the Rup dialects
The Rup dialects can furthermore be divided into two large groups, "true" Rup dialects and Rhodopean dialects. The two groups are sometimes treated as separate dialectal groups. The "true" Rup dialects include the Strandzha dialect, the Thracian dialect, the Serres-Nevrokop dialect and, with some reservations, the Babyak and Razlog dialects. The Rhodopean dialects comprise the Smolyan, Hvoyna, Paulician and Chepino dialect, whereas the Zlatograd dialect is transitional between the two groups. The Babyak and Razlog dialect are usually classified as Rup dialects on account of the reflexes of Old Church Slavonic ѣ. However, most of their other phonological properties are similar or identical to the ones of the Southwestern Bulgarian dialects, and especially to the Samokov and Ihtiman dialect, and that's why they are often considered to be transitional between the two groups.
Phonological and morphological characteristics of the "true" Rup dialects
The reflex of Old Church Slavonic yat is usually before a hard syllable and broad e before a soft syllable: бял/бли instead of formal Bulgarian бял/бели
Vowel reduction of unstressed, and which is weaker than the reduction in the Balkan dialects, yet stronger than the one accepted in the formal language
Transition of a into or broad e after a soft consonant and before a soft syllable: жаба-жеби/жби, чаша-чеши/чши, пиян-пийени/пийни, which is similar to the one in the Central Balkan dialect. This is not accepted in Standard Bulgarian, which has instead adopted Western Bulgarian жаба-жаби, чаша-чаши, пиян-пияни
Suffix -цки instead of -ски for qualitative adjectives: женцки instead of formal Bulgarian женски
Phonological and morphological characteristics of the Rhodopean dialects
The Rhodopean dialects occupy the middle part of the Rup dialects, i.e. the central and western Rhodopes. Due to the mountainous terrain and the relative isolation the speakers which lasted well into the beginning of the 20th century, the Rhodopean dialects are both very well preserved and extremely idiosyncratic with regard to the other Bulgarian dialects. The Rhodopean dialects have the following common phonological and morphological properties:
Broad e for Old Church Slavonic yat in all positions and regardless of the word stress and the character of the following syllable: бл/бли vs. formal Bulgarian бял/бели, голм/голми vs. formal Bulgarian голям/големи. This makes the Rhodopean dialects extremely archaic as the broad e is considered to be the original pronunciation of Old Church Slavonic yat
Full transition of a into broad e after a soft consonant: жбa, чшa
Merger of Old Church Slavonic big yusѫ, little yusѧ, ь and ъ into one vowel which is different, depending on the individual dialect
Lack of consonants дж and дз - ж and з are pronounced instead: жам vs. Standard Bulgarian джам
