Going from Bulgarian to Kyrgyz (ะััะณัะทัะฐ) has a composite linguistic distance of 86% (heuristic estimate). Below is the dimension-by-dimension breakdown.
Shared vocabulary, cognates, and loanwords.
Morphology, syntax, word order, cases.
Shared sounds and phoneme inventory.
Cyrillic โ Cyrillic
Indo-European โ Turkic
The 5 languages with the lowest linguistic distance from Bulgarian:
A quick 3-question check between Bulgarian and Kyrgyz. No signup.