Going from Mongolian to Tajik (ะขะพาทะธะบำฃ) has a composite linguistic distance of 76% (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
Mongolic โ Indo-European
The 5 languages with the lowest linguistic distance from Mongolian:
A quick 3-question check between Mongolian and Tajik. No signup.