Going from Arabic (MSA) to Vietnamese (Tiแบฟng Viแปt) has a composite linguistic distance of 87% (heuristic estimate). Below is the dimension-by-dimension breakdown.
Shared vocabulary, cognates, and loanwords.
Morphology, syntax, word order, cases.
Shared sounds and phoneme inventory.
Arabic โ Latin
Afro-Asiatic โ Austroasiatic
The 5 languages with the lowest linguistic distance from Arabic (MSA):
A quick 3-question check between Arabic (MSA) and Vietnamese. No signup.