Hungarian Historical Phonology meztelen
meztelen 'naked'
mezítláb 'barefoot'
First attestation/Old Hungarian data
[coming]
Important dialectal forms
mesztelen
Uralic/Ugric/Pre-Hungarian reconstruction
(Disputed:)
UEW: PUg *mećɜ- ~ *meśɜ- 'put on clothes; ein Kleid anziehen'
Status of the Ugric etymology
Improbable
Loan etymology
None suggested
Cognates suggested in earlier research
Mansi: South (TJ) mäš-, East (KU) mǟš-, West (P) mǟš- 'kleiden', North (So) mas- 'anziehen, ankleiden' < Proto-Mansi *mǟš-
Commentary
Due to the mismatch between Proto-Mansi *š and Hungarian z, the etymology is problematic and no Proto-Ugric word can be reconstructed. Hungarian z derives regularly from Uralic *t between vowels, and the phoneme also appears in Iranian and Turkic loanwords. However, a relationship Hu z ~ Ms š is completely irregular, and there are no convincing parallels to this. Forms with sz are found in dialects, and it is unclear which sibilant should be considered the original.
There is also a semantic mismatch between the Hungarian and Mansi words: Hungarian meztelen means 'naked', mezitláb 'barefoot', whereas Mansi *mǟš- means 'to put on clothes'. It is possible that the Hungarian and Mansi words have nothing to do with each other.
Conclusion
The Proto-Ugric etymology cannot be correct as such due to problems with historical phonology.
References
EWUng
UEW s.v. mećɜ, meśɜ: Proto-Ugric Uralonet