Going from Yiddish to Hebrew (עברית) has a composite linguistic distance of 64% (curated lexical data). Below is the dimension-by-dimension breakdown.
Shared vocabulary, cognates, and loanwords.
Morphology, syntax, word order, cases.
Shared sounds and phoneme inventory.
Hebrew → Hebrew
Indo-European ↔ Afro-Asiatic
The 5 languages with the lowest linguistic distance from Yiddish:
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