| Rup Bulgarian | |
| Familycolor: | Indo-European |
| Region: | Eastern Bulgaria |
| Ethnicity: | Bulgarians |
| Fam1: | Indo-European |
| Fam2: | Balto-Slavic |
| Fam3: | Slavic |
| Fam4: | South Slavic |
| Fam5: | Bulgarian |
| Dia1: | Strandzha |
| Dia2: | Thracian |
| Dia3: | Smolyan (Including:Pomak) |
| Dia4: | Hvoyna |
| Dia5: | Chepino |
| Dia6: | Paulician |
| Dia7: | Zlatograd |
| Dia8: | Babyak |
| Dia9: | Razlog |
| Dia10: | Serres-Nevrokop |
The Rup dialects, or the Southeastern dialects, are a group of Bulgarian dialects located east of the yat boundary, thus being part of the Eastern Bulgarian dialects. The range of the Rup dialects includes the southern part of Thrace, i.e. Strandzha, the region of Haskovo, the Rhodopes and the eastern half of Pirin Macedonia.
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 (Pomaks) 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 (yat). Whereas the Western Bulgarian dialects have only pronounced as /[ɛ]/ for yat in all positions and the Balkan dialects have pronounced as /[ʲa]/ or pronounced as /[ɛ]/, 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: pronounced as /[ʲa]/ in all positions, broad е (pronounced as /[æ]/) in all positions, pronounced as /[ʲa]/ before a hard syllable and broad e (pronounced as /[æ]/) before a soft syllable, broad e (pronounced as /[æ]/) in a stressed syllable and normal e in an unstressed syllable, etc. etc.
The following phonological and morphological characteristics apply to all Rup dialects:
The Rup dialects can furthermore be divided into two large groups, "true" Rup dialects (further divided into western and eastern Rup dialects based on geographical grounds) 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 (yat). 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.
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: